Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1123 
RPC I index 90
monogram
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, 444 Show 444 14 1
RPC I, 441 Show 441 93 1