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 2202 4 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2200 22 5.2
RPC V.2, — (number not assigned), type ID 719 Show 2202 3 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2203 22 5.2
RPC V.2, — (number not assigned), type ID 1000 Show 2201 4 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2200 3 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2200 7 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2200 12 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2200 13 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2200 14 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2200 19 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2200 21 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2200 27 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2200 28 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2200 29 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2200 36 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2200 37 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2203 1 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2203 3 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2203 15 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2203 19 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2203 21 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2200 24 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2200 11 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2200 15 5.2
RPC V.2, — (number not assigned), type ID 719 Show 2202 8 5.2
RPC V.2, — (number not assigned), type ID 895 Show 2200 34 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2203 20 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2203 16 5.2
RPC V.2, — (number not assigned), type ID 781 Show 2203 9 5.2
RPC V.2, — (number not assigned), type ID 184 Show 2206 11 5.2