Countermark

https://rpc.ashmus.ox.ac.uk/countermark/229 
GIC 106
bearded bust r.
oval 
see note 
the punch on the coin of RPC III, 3219 appears to be 12.5 x 9.5 mm whereas that on the RPC III, 3221 coins seems to be 8.5 x 7.5 mm 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC III, 3221 Show 3221 6 3
RPC III, 3219 Show 3219 1 3
RPC III, 3221 Show 3221 11 3
RPC III, 3221 Show 3221 2 3
RPC III, 3221 Show 3221 16 3
RPC III, 3219 Show 3219 4 3