Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1553 
GIC 754 i
denominational mark Β
incuse 
8 x 4 mm 
Applied at the same time as GIC 786 ( Δ ο). Callu suggested that the o stood for obols (he assumed 1 obol = 2 assaria). Johnston (p. 217) suggested that the B 'appears to be engraved on the die'. 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC X, — (number not assigned), type ID 63879 Show 465 2 10
RPC X, — (number not assigned), type ID 63879 Show 465 13 10
RPC X, — (number not assigned), type ID 63879 Show 465 14 10
RPC X, — (number not assigned), type ID 63879 Show 465 11 10
RPC X, — (number not assigned), type ID 63879 Show 465 10 10
RPC X, — (number not assigned), type ID 63879 Show 465 21 10
RPC X, — (number not assigned), type ID 63879 Show 465 8 10
RPC X, — (number not assigned), type ID 63879 Show 465 6 10
RPC X, — (number not assigned), type ID 63879 Show 465 23 10
RPC X, — (number not assigned), type ID 63876 Show 467 7 10
RPC X, — (number not assigned), type ID 63876 Show 467 4 10
RPC X, — (number not assigned), type ID 63876 Show 467 3 10
RPC X, — (number not assigned), type ID 63879 Show 465 22 10
RPC X, — (number not assigned), type ID 63879 Show 465 20 10
RPC X, — (number not assigned), type ID 63879 Show 465 18 10