Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1101 
RPC I index 68
ST
For a table of the Spanish countermarks, see here. 
List of countermarks View on a map

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 450 Show 450 50 1
RPC I, 448 Show 448 142 1