Countermark

https://rpc.ashmus.ox.ac.uk/countermark/88 
GIC 827
denominational mark H
circular (or slightly oval) 
8 mm 
likely applied at Heraclea or Tium or both 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC VII.2, 2134 Show 2134 1 7.2
RPC VII.2, 2144 Show 2144 1 7.2
RPC VII.2, 2102 Show 2102 1 7.2
RPC VII.2, 2102 Show 2102 4 7.2
RPC VII.2, 2106 Show 2106 4 7.2
RPC VII.2, 2107 Show 2107 2 7.2
RPC VII.2, 2111 Show 2111 1 7.2
RPC VII.2, 2116 Show 2116 1 7.2
RPC VII.2, 2118 Show 2118 1 7.2
RPC VI, 3569 (temporary) Show 2923 1 6
RPC VI, 3592 (temporary) Show 2949 1 6
RPC VI, 3586 (temporary) Show 2984 2 6
RPC VII.2, 2106 Show 2106 5 7.2
RPC VIII, — (number not assigned), type ID 20040 Show 885 1 8
RPC VIII, — (number not assigned), type ID 19745 Show 882 1 8
RPC VIII, — (number not assigned), type ID 19743 Show 880 2 8
RPC VII.2, 2056 Show 2056 1 7.2
RPC V.2, — (number not assigned), type ID 71951 Show 90 1 5.2
RPC V.2, — (number not assigned), type ID 72026 Show 127 1 5.2
RPC VII.2, 2106 Show 2106 3 7.2
RPC VI, 3569 (temporary) Show 2923 2 6
RPC VI, 30187 (temporary) Show 2925 2 6
RPC VI, 3574 (temporary) Show 2930 4 6
RPC VI, 30186 (temporary) Show 2939 2 6
RPC VI, 30547 (temporary) Show 2985 1 6
RPC V.2, — (number not assigned), type ID 86241 Show 143 1 5.2
RPC IX, 372 Show 372 1 9
RPC VI, 30187 (temporary) Show 2925 1 6