Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1554 
GIC 754 ii
denominational mark ο - where ο applied separately from B
circular 
2.5 mm 
Coela (Thrace)
Applied at the same time as GIC 786 ( Δ ο). Callu suggested that the o stood for obols (he assumed 1 obol = 2 assaria) 
List of countermarks View on a map

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC X, — (number not assigned), type ID 63879 Show 463 2 10
RPC X, — (number not assigned), type ID 63879 Show 463 13 10
RPC X, — (number not assigned), type ID 63879 Show 463 21 10
RPC X, — (number not assigned), type ID 63879 Show 463 23 10
RPC X, — (number not assigned), type ID 63876 Show 465 3 10
RPC X, — (number not assigned), type ID 63879 Show 463 20 10