| Province | Asia |
| Subprovince | Conventus of Halicarnassus |
| City | Cos |
| Region | Caria |
| Reign | Uncertain |
| Obverse inscription | ΝΙΚΙΑΣ |
| Obverse design | wreathed head of Nikias, right |
| Reverse inscription | ΚΩΙΩΝ ΚΑΛΛΙΠΠΙΔΗΣ |
| Reverse design | laureate head of Asclepius, right |
Coin no. 7 of RPC I, 2728
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| URI | https://rpc.ashmus.ox.ac.uk/coin/423404 |
| Museum | Museum of Fine Arts, Boston (USA) |
| Inventory no. | 1986.346 |
| Reference | |
| Diameter | 31.5 |
| Weight | 20.33 |
| Axis | 12 |
| Note | |
| External URI | https://collections.mfa.org/objects/3007 |
| Addition | Additional coin (post publication) |