Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1245 
RPC I index —
•B in circular punch
For a table of the Spanish countermarks, see here.  

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 441 Show 441 82 1
RPC V.2, — (number not assigned), type ID 72548 Show 4613 2 5.2