Countermark

https://rpc.ashmus.ox.ac.uk/countermark/698 
GIC 572
ϚΑϹ (or possibly ϚΑƐ)
rectangular 
8 x 4 mm 
The first letter may be a stigma. The A may be barred orunbarred. The interpretation is uncertain. 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC IV, 6272 (temporary) Show 2386 10 4.3
RPC IV, 9109 (temporary) Show 2357 3 4.3
RPC III, 3795 Show 3795 52 3
Show 110
Show 318
Show 351
RPC III, 3796 Show 3796 11 3
Show 474
RPC III, 3795 Show 3795 53 3
RPC IV, 9109 (temporary) Show 2357 5 4.3
Show 141
RPC IV, 9002 (temporary) Show 2395 4 4.3