| Province | Bithynia |
| City | Heracleia Pontica |
| Size (mm) | circa 24 |
| Weight (g) | 5.35 |
| Die Axis | |
| Tariff | - |
| Governor | - |
| Ob. Leg. | M OPEL ANTWN DI-ADOVMENIANOC |
| Ob. Desc. | Bare headed and draped bust right – seen from behind |
| Meaning | Marcus Opellius Antonius Diadumenianus |
| Rev. Leg. | HRAKLHA-C ENPONTW | Rev. Desc. | Aesklepios with serpent entwined staff | Meaning | (coin) of the people of Heracleia Pontica – Good health | References | Gorny & Mosch Giessener Münzhandlung Auction 126 October 14th, 2003 Lot number: 1799 (illustrated by permission); Wadd. Vol.1 No.179 pp.372 | Notes: |