Countermark

https://rpc.ashmus.ox.ac.uk/countermark/740 
GIC 615
monogram ΔΙΟΓ
square 
7 mm 
Hadrianotherae (Mysia)
Interpreted as being for the magistrate Diogenes: https://rpc.ashmus.ox.ac.uk/magistrate/109. This means that Diogenese countermarked his own coins, but there is nothing inherently wrong with that. 
List of countermarks View on a map

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC V.2, — (number not assigned), type ID 719 Show 2192 4 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2190 23 5.2
RPC V.2, — (number not assigned), type ID 719 Show 2192 3 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2193 22 5.2
RPC V.2, — (number not assigned), type ID 1000 Show 2191 4 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2190 3 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2190 7 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2190 12 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2190 13 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2190 14 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2190 19 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2190 21 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2190 27 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2190 28 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2190 29 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2190 37 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2190 38 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2193 1 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2193 3 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2193 15 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2193 19 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2193 21 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2190 25 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2190 11 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2190 15 5.2
RPC V.2, — (number not assigned), type ID 719 Show 2192 8 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2190 35 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2193 20 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2193 16 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2193 9 5.2
RPC V.2, — (number not assigned), type ID 184 Show 2196 11 5.2