Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1039 
RPC I index 6
small head of bird (eagle?), l.
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, 418 Show 418 58 1