| Province | Bithynia |
| City | Heracleia Pontica |
| Size (mm) | 18 |
| Weight (g) | 4.10 |
| Die Axis | 0 |
| Tariff | - |
| Governor | - |
| Ob. Leg. | M OPEL ANT DI-ADOVMENIANOC |
| Ob. Desc. | Bare headed, draped and cuirassed bust right |
| Meaning | Marcus Opellius Antonius Diadumenianus |
| Rev. Leg. | HRAKLHA-C ENPONTW | Rev. Desc. | HArpocrates standing left - hand to lips | Meaning | (Coin) of the people of Heracleia Pontica | References | Collection; ISEGRIM 32147; Wadd. RG 180 p.372; Mionnet Supp. 5; No. 339, p.65; | Notes: |