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 4516 6 5.2
RPC V.2, — (number not assigned), type ID 64237 Show 4518 5 5.2
RPC V.2, — (number not assigned), type ID 64614 Show 4527 3 5.2
RPC V.2, — (number not assigned), type ID 64293 Show 4529 5 5.2
RPC V.2, — (number not assigned), type ID 64293 Show 4529 34 5.2
RPC V.2, — (number not assigned), type ID 64233 Show 4528 15 5.2
RPC V.2, — (number not assigned), type ID 64293 Show 4529 4 5.2
RPC V.2, — (number not assigned), type ID 64237 Show 4518 16 5.2
RPC V.2, — (number not assigned), type ID 64233 Show 4528 32 5.2
RPC V.2, — (number not assigned), type ID 64293 Show 4529 43 5.2
RPC V.2, — (number not assigned), type ID 64233 Show 4528 40 5.2
RPC V.2, — (number not assigned), type ID 64612 Show 4498 3 5.2