Province Bithynia-Pontus
City Calchedon 
Region Bithynia
Reign Marcus Aurelius
Obverse inscription ΑVΤ Κ Μ ΑVΡ ΑΝΤΩΝΕΙΝΟΝ(?)
Obverse design bare head of Marcus Aurelius, r.
Reverse inscription ΚΑΛΧΑΔοΝΙΩΝ
Reverse design nude Poseidon standing with foot on rock, l., leaning forward, holding dolphin and trident


Museum Nationalmuseet, Copenhagen (Denmark)
Inventory no. 361
Reference Rec 63, pl. XLVII.15 (rev.), pierced, 6.27g
Diameter 23
Axis 6