Siscia

Siscia (Diœcesis Pannoniarvm, province of Savensis)

  • Pre-reform
  • Coinage, 293-308
  • Coinage, 309-337
  • About Siscia...
  • Map

One of the distinguishing features of the Siscia mint was the habit of using mint control marks to spell out coded words or phrases. Prior to the advent of the tetrarchy in 294, when power was shared between only Diocletian and Maximianus, these mint marks spell out the names (in Greek letters) of the two imperial houses in three segments each: Ι, Ο, and ΒΙ ("Iovi") for Diocletian, and ΕΡ, ΚOΥ, and ΛΙ ("Herculi") for Maximianus.

This happened again with the last issue of Genius folles in 300, which used the letters L, C, S, and I as control marks in the fields; so far, it is not known what these represent.

204-047
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Diocletian augustus
—struck by Diocletian
Siscia, 289-290
obv.- IMP C C VAL DIOCLETIANVS P F AVG; radiate, cuirasses, bust right
rev.- CONSERVATOR AVGG; Diocletian and Jupiter, standing facing each other, sacrificing at altar, each holding a long scepter; A in field, •XXI•I• in ex
RIC V Sis 263ap
24mm; 4.5g; antoninianus
One of the "coded" series of antoniniani, with the word IOVI in the mintmark: I, O, BI. This is coin 1 in the series.
204-490
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Diocletian augustus
—struck by Diocletian
Siscia, 289-290
obv.- IMP C C VAL DIOCLETIANVS P F AVG; radiate, cuirassed, bust right
rev.- CONSERVATOR AVGG; Jupiter standing left, holding scepter & Diocletian opposite, holding scepter, each holding patera & sacrificing at altar between them; gamma in field, •XXI•O• in ex
RIC V Sis 263
23mm; 4.0g; antoninianus
One of the "coded" series of antoniniani, with the word IOVI in the mintmark: I, O, BI. This is coin 2 in the series.
204-079
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Diocletian augustus
—struck by Diocletian
Siscia, 289-290
obv.- IMP C C VAL DIOCLETIANVS P F AVG; radiate, cuirassed, bust right
rev.- CONSERVATOR AVGG; Jupiter standing left, holding scepter & Diocletian opposite, holding scepter, each holding patera & sacrificing at altar between them; Γ in field, •XXI•BI• in ex
RIC V Sis 263bk
23mm; 4.0g; antoninianus
One of the "coded" series of antoniniani, with the word IOVI in the mintmark: I, O, BI. This is coin 3 in the series.
104-998
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Maximianus augustus
—struck by Diocletian
Siscia, 289-290
obv.- IMP C MA MAXIMIANVS P F AVG; radiate cuirassed bust right
rev.- CONSERVATOR AVGG; Maximianus and Hercules sacrificing at altar; A in field; •XXI•ΗΡ• in ex
RIC V.2 Sis 580ad
23mm; 3.8g; antoninianus
One of the "coded" series of antoniniani, with the word ΗΡΚΟΥΛΙ in the mintmark: ΗΡ, ΚΟΥ, ΛΙ. This is coin 1 in the series.
204-290
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Maximianus augustus
—struck by Diocletian
Siscia, 289-290
obv.- IMP C MA MAXIMIANVS P F AVG; Radiate bare "heroic" bust right
rev.- CONSERVATOR AVGG; Maximianus and Hercules sacrificing at alter; A in field; XXI KOY in ex
RIC V.2 Sis 581o
24mm; 4.25g; antoninianus
One of the "coded" series of antoniniani, with the word ΗΡΚΟΥΛΙ in the mintmark: ΗΡ, ΚΟΥ, ΛΙ. This is coin 2 in the series. This is an uncommon bust type, that is supposed to look more "Herculean" with the bare chest and exaggerated muscles, compared to the usual busts where the emperor is wearing armor and/or commander's cloak.
204-402
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Maximianus augustus
—struck by Diocletian
Siscia, 289-290
obv.- IMP C M A VAL MAXIMIANVS P F AVG; radiate bust right
rev.- CONSERVATOR AVGG; Emperor holding sceptre & Hercules, leaning on club, standing face to face, sacrificing at altar; B in field; XXI KOY in ex
RIC V.ii Sis 580
23mm; 3.8g; antoninianus
204-383
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Maximianus augustus
—struck by Diocletian
Siscia, 287
obv.- IMP C MAXIMIANVS PF AVG; Radiate cuirassed bust right
rev.- CLEMENTIA AVG; Emperor standing right, holding scepter and receiving Victory on a globe from Jupiter, standing left and holding scepter; B in field, XXI in ex
RIC V.ii Sis 575 [var]
23mm; 4.4g; antoninianus
Scarce type for Maximianus, and unlisted in RIC with this obverse legend
204-507
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Constantius I caesar
—struck by Maximianus
Siscia, 294
obv.- FL VAL CONSTANTIVS NOB C; laureate bust right
rev.- GENIO POPVLI ROMANI; Genius standing left, holding patera & cornucopiae; S in field
RIC VI Sis 75a
mm; g; nummus
Rare first issue of reformed coinage from Siscia mint
204-327
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Constantius I caesar
—struck by Maximianus
Siscia, 294
obv.- FL VAL CONSTANTIVS NOB C; laureate bust right
rev.- GENIO POPVLI ROMANI; Genius, stg.l., holding patera in r.hand, cornucopiae in left hand; S in field
RIC VI Sis 75a
27mm; 8.8g; nummus
First issue of post-reform bronze coins from Siscia mint. Rated R in RIC.
204-345
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Diocletian augustus
—struck by Maximianus
Siscia, 295
obv.- DIOCLETIANVS AVG; laureate bust right
rev.- VICTORIA AVGG; Tetrarchs sacrificing over tripod before city enclosure with six turrets
RIC VI Sis 49; RSC 483a
19mm; 2.9g; argenteus
Listed as R5 in RIC. This rare legend for argentii was only used at Siscia mint.
104-930
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Diocletian augustus
—struck byMaximianus
Siscia, 294
obv.- IMP C C VAL DIOCLETIANVS P F AVG; laureate bust right
rev.- GENIO POPVLI ROMANI; Genius standing left wearing modius on head and chlamys over left shoulder, holding patera and cornucopia; S in left field, Γ in right field
RIC VI Sis 76a; Fail 006
27mm; 10g; nummus
Rated S in RIC
104-814
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Constantius I caesar
—struck by Maximianus
Siscia, 294
obv.- FL VAL CONSTANTIVS NOB C;
rev.- GENIO POPVLI ROMANI; Genius standing left holding patera & cornucopiae. S/Γ in fields, no mint mark in ex
RIC VI Sis 81a; Fail 006
27mm; 12.0g; nummus
This is actually a decent coin, but frustratingly tough to get a good picture. Almost fully silver-plated, and way overweight at 12 grams.
204-415
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Galerius caesar
—struck by Maximianus
Siscia, 294
obv.- GAL VAL MAXIMIANVS CAES; laureate bust right
rev.- GENIO POPVLI ROMANI; Genius standing facing, modius on head left, naked but for chlamys over left shoulder, patera in right hand, cornucopiae in left; S | B across fields
RIC VI Sis 81b [var]
27mm; 9.1g; nummus
The obverse obverse legend for the caesars without a reference to Nobilissimus (in some form) before Caesar is not attested for any issue in RIC VI. This obverse legend IS used for aurei
104-749
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Diocletian augustus
—struck by Maximianus
Siscia, 299
obv.- IMP DIOCLETIANVS P F AVG; l-b-r
rev.- GENIO POPVLI ROMANI; Genius with patera and cornucopiae standing; A in field; SIS in ex
RIC VI Sis 108a; Fail 006
27mm; 11.3g; nummus
104-772
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Galerius caesar
—struck by Maximianus
Siscia, 299
obv.- MAXIMIANVS NOB CAES; laur bust right
rev.- GENIO POPVLI ROMANI; B in field, SIS in ex
RIC VI Sis 109b; Fail 006
29mm; 10.3g; nummus
The reverse is still crusted with the original, "as-found" hoard patina and a layer of hard soil. This coin shows the contrast between the cleaned and uncleaned regions pretty clearly. Some people prefer their coins completely cleaned, some people prefer that they remain uncleaned, as found.
204-102
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Galerius caesar
—struck by Maximianus
Siscia, 300
obv.- MAXIMIANVS NOB CAES; laureate bust right
rev.- GENIO POPVLI ROMANI; Genius standing left, holding patera and cornucopia; L-B in fields, XXISIS in ex
RIC VI Sis 122
27mm; 11.2g; nummus
204-347
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Diocletian augustus
—struck by Maximianus
Siscia, 300
obv.- IMP DIOCLETIANVS PF AVG; laureate bust right
rev.- GENIO POPVLI ROMANI; Genius standing left, holding patera and cornucopia; C-B in fields, XXISIS in ex
RIC VI Sis 111
30mm; 9.4g; nummus
204-166
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Diocletian augustus
—struck by Maximianus
Siscia, 301
obv.- IMP DIOCLETIANVS P F AVG; Laureate bust right
rev.- SACRA MONET AVGG ET CAESS NOSTR; Moneta standing left, holding scales and cornucopia; SIS in exergue; * in left field, Γ in right field,
RIC VI Sis 134a
28mm; 9.4g; nummus
Ex Jacob Stein Collection. Displayed at Cincinnati Art Museum, 1994-2008, no. 179
204-382
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Constantius I caesar
—struck by Maximianus
Siscia, 301
obv.- IMP DIOCLETIANVS P F AVG; Laureate bust right
rev.- SACRA MONET AVGG ET CAESS NOSTR; Moneta standing left, holding scales and cornucopia; SIS in exergue; * in left field, B in right field,
RIC VI Sis 135a
27mm; 9.4g; nummus
104-736
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Maximianus augustus
—struck by Maximianus
Siscia, 302
obv.- IMP MAXIMIANVS P F AVG; laur bust right
rev.- SACRA MONET AVGG ET CAESS NOSTR; Moneta standing left, holding scales in right hand, cornucopiae in left; *-B/*SIS
RIC VI Sis 136b; Fail 028
28mm; 9.4g; nummus
204-436
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Galerius caesar
—struck by Maximianus
Siscia, 302
obv.- MAXIMIANVS NOB CAES; laureate bust right
rev.- SACRA MONET AVGG ET CAESS NOSTR; Moneta standing left, holding scales & cornucopia, * in left field, Γ in right field, *SIS in exergue
RIC VI Sis 137b
30mm; 9.4g; nummus
204-591
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Constantius I augustus
—struck by Severus II
Siscia, 305-306
obv.- IMP C CONSTANTIVS P F AVG; laureate bust right
rev.- HERCVLI VICTORI; Hercules stg facing, head left, leaning right on club, holding three apples and lion's skin; VI in field; SISA in ex
RIC VI Sis 165a
28mm; 10.8g; nummus
204-119
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Galerius augustus
—struck by Severus II
Siscia, 305-306
obv.- IMP MAXIMIANVS P F AVG; laureate bust right
rev.- HERCVLI VICTORI; Hercules naked standing left holding lion's skin and three apples and leaning on club. VI in left field, SISΓ in exergue
RIC VI Sis 165b
28mm; 9.0g; nummus
rated S in RIC
204-380
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Constantius I augustus
—struck by Galerius
Siscia, 306
obv.- IMP C CONSTANTIVS PF AVG; laureate bust right
rev.- GENIO POPVLI ROMANI; Genius standing left, modius on head, naked except for chlamys over left shoulder, holding patera and cornucopiae; SIS in ex
RIC VI Sis 167
19mm; 2.0g; quarter-nummus
rated R in RIC
204-259
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Galerius augustus
—struck by Severus II
Siscia, 305-306
obv.- MAXIMIANVS AVG; Laureate bust right
rev.- GENIO POPVLI ROMANI; Naked Genius standing l. holding patera in right hand and cornucopia in left; SIS in ex (but off the flan)
RIC VI Sis 169b
17mm; 2.0g; quarter-nummus
204-091
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Severus II caesar
—struck by Severus II
Siscia, 305-307
obv.- FL VAL SEVERVS NOB C;
rev.- CONCORDIA IMPERI; Concord stg. l., holding spear and cornucopiae; VI in field; SISA in ex
RIC VI Sis 173a; Fail 42
26mm; 11.4g; nummus
RIC rated S; Fail rated R.
204-026
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Maximinus II caesar
—struck by Severus II
Siscia, 305-307
obv.- GAL VAL MAXIMINVS NOB C; laureate bust right
rev.- CONCORDIA IMPERII; Concordia stg left, leaning on sceptre, holding fold of drapery; VI in field, SIS-Γ in ex
RIC VI Sis 173b; Fail 042
27mm; 7.8g; nummus
204-602
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Constantine I caesar
—struck by Galerius
Siscia, 306-307
obv.- FL VAL CONSTANTINVS NOB C; laureate bust right
rev.- CONCORDIA IMPERII; Concordia standing left, modius on head, right arm leaning on scepter; VI in right field; SISΓ in ex
RIC VI Sis 173c
27mm; 9.6g; nummus
204-181
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Galerius augustus
—struck by Severus II
Siscia, 305-307
obv.- IMP MAXIMIANVS P F AVG; laureate bust right
rev.- IOVI CONSERVAT; Jupiter standing facing, head left, holding small Victory on globe; VI in field; SISA in ex
RIC VI Sic 179b
27mm; 10.8g; nummus
204-603
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Severus II augustus
—struck by Galerius
Siscia, 306
obv.- IMP SEVERVS PF AVG; laureate bust right
rev.- IOVI CONSERVAT; Jupiter standing left, holding a Victory on a globe and leaning on a scepter; VI in right field; SISΓ in ex
RIC VI Sis 179c
27mm; 8.2g; nummus
204-576
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Severus II caesar
—struck by Galerius
Siscia, 305-306
obv.- FLA VAL SEVERVS NOB C; laureate bust right
rev.- PERPETVITAS AVGG; Roma, helmeted, seated l on shield, holding Victory on globe, leaning on spear or scepter; VI in field; SISB in ex
RIC VI Sis 182a
28mm; 10.2g; nummus
Rated R in RIC
204-361
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Licinius I augustus
—struck by Licinius I
Siscia, 309
obv.- IMP LIC LICINIVS P F AVG; laureate cuirassed bust right
rev.- GENIO AVGVSTI; Genius standing left holding patera in right, cornucopia in left, crescent left, B right, SIS in ex
RIC VI Sis 198b
25mm; 6.7g; nummus
Very first issue of coins struck by Licinius after his appointment as Augustus.
104-744
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Maximinus II fil aug
—struck by Licinius I
Siscia, 309-310
obv.- MAXIMINVS FIL AVGG; Laureate head right
rev.- GENIO AVGVSTI; Genius standing left, holding patera and cornucopiae; (crescent)|Γ in field, SIS in ex
RIC VI Sis 200a; Fail 190b
24mm; 6.7g; nummus
rated S in RIC.
204-230
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Constantine I fil aug
—struck by Licinius I
Siscia, 309-310
obv.- CONSTANTINVS FIL AVGG; Laureate head right
rev.- GENIO AVGVSTI; Genius standing left, holding patera and cornucopiae; (crescent) | A in field, SIS in ex
RIC VI Sis 200b
24mm; 7.4g; nummus
rated S in RIC.
204-118
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Galeria Valeria augusta
—struck by Licinius
Siscia, 308-310
obv.- GAL VALERIA AVG; facing bust, draped in embroidered robe or with necklace, set on crescent; head right with crested hairstyle and stephane
rev.- VENERI VICTRICI; Venus stg facing, head left, right hand holding apple, raising drapery over left shoulder; crescent | A in fields, SIS in ex
RIC VI Sis 210
26mm; 4.8g; nummus
RIC dates this issue following the Carnuntum Conference (to the period 309–311), but coins of Valeria were almost certainly struck at Siscia earlier in 308 before Licinius was appointed as Augustus. However, it's impossible to say whether or not a coin of Valeria with these mint markings was struck by Galerius before Licinius' appointment.
104-756
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Galerius augustus
—struck by Licinius I
Siscia, 310
obv.- IMP MAXIMIANVS P F AVG; laur bust right
rev.- GENIO AVGVSTI; Genius steht links hält Patera und Füllhorn; crescent|A in field, SIS in ex
RIC VI Sis 207a; Fail 190b
24mm; 6.8g; nummus
204-022
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Constantine I augustus
—struck by Licinius I
Siscia, 311
obv.- IMP CONSTANTINVS P F AVG; laureate bust right
rev.- GENIO AVGVSTI; Genius stg left, modius on head, holding patera and cornucopia; crescent-Γ in fields, SIS in ex
RIC VI Sis 209
25mm; 7.3g; nummus
104-871
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Galerius commem
—struck by Licinius I
Siscia, 311
obv.- DIVO GAL VAL MAXIMIANO; Veiled bust right
rev.- FORTI FORTVNAE; Fortuna standing left, holding rudder on globe and cornucopiae, wheel at her feet to right; epsilon? in field' SIS in ex
RIC VI Sis 221; Fail 189
24mm; 5.5g; nummus
204-579
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Licinius I augustus
—struck by Licinius I
Siscia, 312
obv.- IMP LIC LICINIVS PF AVG; laureate bust right
rev.- IOVI CONSERVATORI; upiter standing left, chlamys across left shoulder, holding sceptre in right hand, thunderbolt in left; wreath at feet; A in field; SIS in ex
RIC VI Sis 227a
25mm; 4.8g; nummus
The RIC description implies that there should be an eagle at Jupiter's feet, similar to RIC 222, but there is none. Not clear if this is an unlisted variant, or just a mistake in RIC.
104-683
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Maximinus II augustus
—struck by Licinius I
Siscia, 312
obv.- IMP MAXIMINVS P F AVG; laureate bust right
rev.- IOVI CONSERVATORI; standing left, holding thunderbolt and scepter; SIS in ex; wreath, Δ in field
RIC VI SIS 227b; Fail 202d
23mm; 5.8g; nummus
rated S in RIC
204-064
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Constantine I augustus
—struck by Licinius I
Siscia, 313
obv.- CONSTANTINVS P F AVG; laur cuirassed bust right
rev.- IOVI CONSERVATORI AVGG NN; Jupiter standing l., holding sceptre in l. hand and Victory on globe in r.; eagle holding wreath at feet; A in r. field; In ex.: SIS
RIC VI Sis 234c
23mm; 4.5g; nummus
204-691
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Licinius I augustus
—struck by Licinius I
Siscia, 313-315
obv.- IMP LIC LICINIVS P F AVG; laureate cuirassed bust left; holding spear over right shoulder, shield over left
rev.- IOVI CONSERVATORI AVGG NN; Jupiter standing left, holding Victory on globe and sceptre; at foot, eagle; B in field; SIS in ex
RIC VII 3 [var]
19mm; 3.4g; nummus
This military style bust is completely uncatalogued for this issue, for any coin. This mintmark applies to both the end of RIC VI and the first series of RIC VII, the difference between the two being the inclusion of Maximinus II, who was dropped from the coinage in the middle of the issue. I would catalog it in the RIC VII period, because the military-style bust most likely is a reference to the military tension with Constantine that would have been noticeable in the 315 period.
204-147
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Constantine I augustus
—struck by Licinius I
Siscia, 313-315
obv.- IMP CONSTANTINVS P F AVG; Laureate bust left
rev.- IOVI CONSERVATORI; Jupiter standing left, holding Victory on globe and sceptre; eagle at feet; SIS in ex
RIC VII Sis 5
21mm; 3.1g; nummus
Detailed figure of Jupiter.
204-268
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Licinius I augustus
—struck by Licinius I
Siscia, 313-315
obv.- IMP LIC LICINIVS P F AVG; Laureate bust right
rev.- IOVI CONSERVATORI; Jupiter standing facing, head left, naked but for chlamys over left shoulder, Victory holding wreath in right hand, scepter in left; eagle holding wreath at feet; E in right field; SIS in ex
RIC VII Sis 8
21mm; 3.9g; nummus
204-676
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Licinius I augustus
—struck by Licinius I
Siscia, 315-316
obv.- IMP LIC LICINIVS P F AVG; Laureate bust right
rev.- IOVI CONSERVATORI; Jupiter standing facing, head left, naked but for chlamys over left shoulder, Victory holding wreath in right hand, scepter in left; eagle holding wreath at feet; A in right field; •SIS• in ex
RIC VII Sis 17
21mm; 3.9g; nummus
204-552
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Constantine I augustus
—struck by Constantine I
Siscia, 317
obv.- IMP CONSTANTINVS PF AVG; laureate, draped, cuirassed bust right
rev.- SOLI INVICTO COMITI; Sol standing left, chlamys across left shoulder, raising right hand and holding globe in left hand; * to left; ASIS in ex
RIC VII Sis 31
19mm; 2.5g; nummus
204-596
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Maximianus commem
—struck by Constantine I
Siscia, 317-318
obv.- DIVO MAXIMIANO SEN FORT IMP; Maximianus, laureate and veiled bust right
rev.- REQVIES OPTIMORVM MERITORVM; Emperor sitting on curule chair holding sceptre; SIS in ex
RIC VII Sis 41
16mm; 1.7g; half-nummus
204-082
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Constantius I commem
—struck by Constantine I
Siscia, 317-318
obv.- DIVO CONSTANTIO PIO PRINCIPI; Laureate veiled bust right
rev.- REQVIES OPTIMORVM MERITORVM; Emperor seated left on curule chair, raising right hand, holding sceptre; SIS in ex
RIC VII Sis 42
16mm; 1.5g; half-nummus
204-066
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Constantine I augustus
—struck by Constantine I
Siscia, 319
obv.- CONSTANTINVS AVG; Helmeted, cuirassed bust left with shield and spear
rev.- VICT LAETAE PRINC PERP; Two Victories placing Shield inscribed VOT/PR on altar. •ASIS• in ex
RIC VII Sis 84
19mm; 3.8g; nummus
104-551
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Licinius I augustus
—struck by Constantine I
Siscia, 320
obv.- IMP LICINIVS AVG; Laureate head right, divergent laurel ties
rev.- VIRTVS EXERCIT; standard inscribed VOT XX with captives seated on ground to either side, S to left, F & HL monogram right, BSIS(*-in-crescent) in ex
RIC VII Sis 129; Fail 291
27mm; 6.8g; nummus
rated R in RIC
104-550
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Licinius II caesar
—struck by Constantine I
Siscia, 320
obv.- LICINIVS IVN NOB CAES; Licinius II, in consular robes, laureate bust left, holding a Victory that seems to be crowning him with laurels.
rev.- VIRTVS EXERCIT; Standard inscribed VOT X; two captives std; S|F, HL (ligature) in fields, Δ-SIS star-in-crescent in ex
RIC VII Sis 132; Fail 319.
20mm; 3.2g; AE3
204-696
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Licinius II caesar
—struck by Constantine I
Siscia, 320
obv.- [blundered legend]; laureate cuirassed bust left, holding spear forward, shield on left arm
rev.- [blundered legend]; Trophy between two seated captives; banner reading VOT X; S L in fields; SLG [sic] in ex
cf RIC VII Sis 113
18mm; 2.9g; nummus
not clear if this is supposed to be copying a coin from Lugdunum, as implied by the mintmark, or, most likely, Siscia. The legend clearly is trying to represent Licinius, but this type was not struck for Licinius at Lugdunum
204-455
Thumbnail image of coin

(click image to see larger picture)

Constantius II caesar
—struck by Constantine I
Siscia, 328-329
obv.- FL IVL CONSTANTIVS NOB C; Laureate, draped, cuirassed bust left
rev.- PROVIDENTIAE CAESS; Campgate with eleven rows, two turrets, no doors, star above, top row dots and arches in blocks, bottom row in backslashes and forward slashes; ramp at base ΔSIS double-crescent in ex
RIC VII Sis 217
19mm; 3.3g; nummus

Siscia was one of the most important military outposts in the Balkans and one of the major cities of the Pannonia region. Not only was it an important bulwark against barbarian incursions from the north across the Danube and the front line for the defense of Italy, it was an important staging area for organizing military expeditions to the east. As such, an imperial mint was essential to support the active military presence.

Siscia also represented the earliest frontier between the eastern and western halves of the empire. In the original tetrarchy, it was the eastern-most mint assigned to Maximianus, and shares the design patterns of the other Maximianus mints.

After the abdication of Maximianus, the mint passed to the control of Severus II, and a new catalog of types is introduced, not shared by any of the neighboring mints. The divine houses of two Augusti are commemorated by coins with Herculi and Iovi reverses. The new caesars are introduced with two new motifs: Concordia Imperii, celebrating the peaceful imperial concord in which the new caesars were introduced, and Perpetuitas Augg, celebrating the continuance of the imperial dynasties.

When Maxentius revolted against Severus and the other tetearchs in 306 and 307, his revolt never spread to Siscia, and Siscia never struck coins in his name. When Galerius withdrew his forces from Italy after his failed invasion, evidently he did not withdraw them past Siscia. It appears the Siscia mint did not strike any more coins after the death of Severus in 307, and remained inactive until the appointment of Licinius in 308.

After the revolt of Maxentius and death of Severus II in 307, the mint of Siscia became inactive. The power vacuum was filled at the Carnuntum conference in November 308, when Licinius was appointed Augustus. Despite his official appointment as Augustus of the western half of the empire, the entrenched positions of Constantine and Maxentius meant that his only effective area of control was Pannonia, and Siscia was his only mint.

The coinage types introduced by Licinius in 309 clearly align the Siscia mint with those of Galerius to the east. The Genius type is reintroduced, but as Genio Augusti; Constantine and Maximinus are recognized as filius augustorum; and Galerius' wife Valeria is commemorated as augusta. All of these types are unknown in the western part of the empire. Thus, Siscia transitions from the easternmost mint of the western empire, to the westernmost mint of the eastern empire.

After the death of Galerius in 311, all the current coinage types were replaced by the Iovi Conservatori types that became Licinius' standard. Constantine recognized the strategic importance of Siscia and began incursions in the Balkans soon after he took control of Italy in 313, taking control of the Siscia mint in 316, using the region as a staging area for his later, decisive war against Licinius.

Locator map of city

 

Timeline

4th century BC — Celtic tribes, in opposition to native Illyrians, establish village of Segestica.

35 BC — Segestica conquered by Roman forces under Octavian. City of Siscia founded across the river.

71 AD — City is granted colona status, Colonia Flavia Siscia.

262 — Emperor Gallienus establishes imperial mint.

284 — St. Kvirin (patron saint of Sisak) becomes first known Christian bishop. Martyred in 303 during Diocletian's persecutions.

297 — City becomes capital of Pannonia Savia province.

317 — Constantine assumes control of city from Licinius after their first civil war.

383 — Mint closed by Theodosius.

819 — Ljudevit Posavski leads Croatian revolt against Franks and establishes Sisak as stronghold.

1544 — Major fortress—still standing— built to defend against Turks.

1593 — Important battle—and victory—against Turks. Evidently, that fortress worked out well.