Countermark

https://rpc.ashmus.ox.ac.uk/countermark/173 
GIC 52
radiate head of bust of emperor r.
circular 
5.5 mm 
on obverse (one on reverse); the placing of one stamp on the reverse was probably due to the earlier countermark (GIC 39) on the obverse 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC V.2, — (number not assigned), type ID 64432 Show 4477 6 5.2
RPC V.2, — (number not assigned), type ID 64237 Show 4479 5 5.2
RPC V.2, — (number not assigned), type ID 64614 Show 4488 3 5.2
RPC V.2, — (number not assigned), type ID 64293 Show 4490 5 5.2
RPC V.2, — (number not assigned), type ID 64293 Show 4490 34 5.2
RPC V.2, — (number not assigned), type ID 64233 Show 4489 15 5.2
RPC V.2, — (number not assigned), type ID 64293 Show 4490 4 5.2
RPC V.2, — (number not assigned), type ID 64237 Show 4479 16 5.2
RPC V.2, — (number not assigned), type ID 64233 Show 4489 30 5.2
RPC V.2, — (number not assigned), type ID 64293 Show 4490 43 5.2
RPC V.2, — (number not assigned), type ID 64233 Show 4489 38 5.2
RPC V.2, — (number not assigned), type ID 64612 Show 4459 3 5.2