| Province | Asia |
| Subprovince | Conventus of Sardis |
| City | Philadelphia |
| Region | Lydia |
| Reign | Caligula |
| Obverse inscription | ΓΑΙΟΣ ΚΑΙΣΑΡ |
| Obverse design | bare head of Caligula, right |
| Reverse inscription | ΦΙΛΑΔΕΛΦΕΩΝ ΑΠΟΛΛ[ ] ΦΙΛΟΚΑΙΣ |
| Reverse design | laureate busts of the Dioscuri, jugate, right |
Coin no. 1 of RPC I, 3029B
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| URI | https://rpc.ashmus.ox.ac.uk/coin/318601 |
| Museum | Geldmuseum, Österreichische Nationalbank, Vienna (Austria) |
| Inventory no. | |
| Reference | SNG Leypold 1113 |
| Diameter | 17 |
| Weight | 3.35 |
| Axis | 12 |
| Note | |
| Addition | Additional coin (post publication) |