| Province | Thrace |
| City | Byzantium |
| Region | Thrace |
| Reign | Severus Alexander |
| Obverse inscription | ΙΟΥΛΙΑ ΜΑΜΑΙΑ ΑΥΓ |
| Obverse design | diademed and draped bust of Julia Mamaea, right |
| Reverse inscription | ΕΠΙ ΑΙ ϹΕΥΗΡΟΥ ΒΥΖΑΝΤΙΩΝ (sometimes reversed Ζ) |
| Reverse design | dolphin, right, between two fishes, the above one right, the below one left |
Coin no. 1 of RPC VI, 916 (temporary)
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| URI | https://rpc.ashmus.ox.ac.uk/coin/244753 |
| Museum | Berlin, Staatliche Museen (Germany) |
| Inventory no. | 87/1904 |
| Reference | Schönert-Geiss, Byzantion 1773 |
| Diameter | 24 |
| Weight | 8.96 |
| Axis | |
| Note |