Countermark

https://rpc.ashmus.ox.ac.uk/countermark/121 
GIC 5
Asclepius, bust r.
square or rectangular 
6 x 5 mm 
Applied on either side of coin; For the importance of Asklepius at Aegeae see H. Bloesch, 'Caracalla in Aegeai', Congresso Internazionale di Numismatica, Rome 1961, vol.2, 1965, pp.307-12. For his temple: Price and Trell fig.395. For an alternative identification cf. SNG vA 8665 ('Poseidon'). 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
Show 203
RPC V.3, — (number not assigned), type ID 85084 Show 2934 11 5.3
RPC V.3, — (number not assigned), type ID 85083 Show 2933 2 5.3
RPC V.3, — (number not assigned), type ID 85089 Show 2937 1 5.3
RPC V.3, — (number not assigned), type ID 85093 Show 2946 1 5.3
RPC V.3, — (number not assigned), type ID 85105 Show 2954 14 5.3
RPC V.3, — (number not assigned), type ID 85109 Show 2961 1 5.3
RPC V.3, — (number not assigned), type ID 85188 Show 2992 1 5.3
RPC V.3, — (number not assigned), type ID 85083 Show 2933 4 5.3
Show 128
RPC V.3, — (number not assigned), type ID 85469 Show 2998 1 5.3
RPC V.3, — (number not assigned), type ID 85470 Show 2997 1 5.3
RPC V.3, — (number not assigned), type ID 85466 Show 3000 1 5.3
RPC V.3, — (number not assigned), type ID 85476 Show 3010 1 5.3
RPC V.3, — (number not assigned), type ID 85092 Show 2944 1 5.3
RPC V.3, — (number not assigned), type ID 85112 Show 2958 4 5.3
RPC V.3, — (number not assigned), type ID 95072 Show 2987 1 5.3
RPC IV, 9754 (temporary) Show 1242 4 4.3