AD 284-305 AE Antoninianus, 20mm, 2.95gm Heraclea Mint Obv.: IMP C C VAL DIOVLETIANVS P F AVG, radiate, draped and cuirassed bust right Rev.: CONCORDIA MILI-TVM, Diocletian standing right, holding scepter and receiving Victory on globe from Jupiter standing left, holding long sceptre
since there is no evidence of anything in the exergue, I would call this one RIC VI Heraclea 13. Both coins are identical except for the mintmark. Here is RIC Vii Heraclea 284 here is RIC VI Heraclea 13/21
DIOCLETIAN RI Diocletian 284-305 CE AE Radiate Fraction VOT XX RI Diocletian Ӕ Quinarius 1.46g 16mm Rome AD 284-305 IOVI CONSERVAT AVGG, Jupiter stndng thunderbolt sceptre R RIC 193
I just got this Diocletian today Diocletian A.D. 293 Æ Antoninianus 22x23mm 4.5gm IMP DIOCLETIANVS AVG; Radiate, draped and cuirassed bust right. P M TR P VIII COS IIII P P; radiate lion walking left, holding thunderbolt in its mouth In ex. A ✶ RIC Vii Lyon 5; Bastien 463 (10 ex.)
Diocletian AE Follis. 305-306 AD. D N DIOCLETIANO FELICISSIMO SEN AVG, laureate bust right in imperial mantle, holding olive branch and mappa PROVIDENTIA DEORVM QVIES AVGG, Providentia standing facing right, extending right hand to Quies, facing left, holding branch and sceptre. S-F across outer fields, officina letter B in lower centre. Mintmark dot SM dot SD dot. RIC VI Serdica 15a; Sear 12940. Obv:– IMP C C VAL DIOCLETIANVS P F AVG, Radiate draped and cuirassed bust right (seen from rear). Rev:– IOVI CONSERVAT AVG, Jupiter standing left with thunderbolt & scepter Minted in Lugdunum (B in left field). Emission 1 Second Series, Officina A. Mid A.D. 286 – April A.D. 286. References:– Cohen 215. RIC V pt. 2 Lugdunum 41 Bust type C. Bastien 21 (20 examples cited)
Diocletian Ar Argenteus Obv: DIOCLETIANVS AVG, laureate head of Diocletian facing right. Rev: VIRTVS MILITVM, the four Tetrarchs sacrificing over a tripod, before a Roman camp gate, E mint mark below. 2.18g, 286-305 AD. Kampmann 119.78. Ex Christoph Gärtner auction 45, lot 4098, Oct 2019.
Diocletian BI Nummus. Serdica, AD 305-306. D N DIO[CLETIAN]O B[AEATI]SSIMO SEN AVG, laureate bust to right, wearing imperial mantle, holding olive branch and mappa / PROVIDENTIA DEORVM QVIES AVGG, Providentia standing to right, extending right hand to Quies, standing to left, holding branch and leaning on sceptre; S-Δ-F across fields, •SM•SD• in exergue. RIC VI 14a. RHC 36 pg. 254 Abdication 9.26g, 27mm, 12h.