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 2185 4 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2183 23 5.2
RPC V.2, — (number not assigned), type ID 719 Show 2185 3 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2186 22 5.2
RPC V.2, — (number not assigned), type ID 1000 Show 2184 4 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2183 3 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2183 7 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2183 12 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2183 13 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2183 14 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2183 19 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2183 21 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2183 27 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2183 28 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2183 29 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2183 37 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2183 38 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2186 1 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2186 3 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2186 15 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2186 19 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2186 21 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2183 25 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2183 11 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2183 15 5.2
RPC V.2, — (number not assigned), type ID 719 Show 2185 8 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2183 35 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2186 20 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2186 16 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2186 9 5.2
RPC V.2, — (number not assigned), type ID 184 Show 2189 11 5.2