Many thanks for the reply. I am very much in the dark on this one. I bought it at a country auction
when I was 17 with about 30 coins of Elizabeth I and another hammered silver Spanish piece. The Elizabethan coins have all gone now but I still have the Spanish coins and though I migh as well find out something about them.
I must admit that I thought it mught be 1556 (the date would fit in with the other coins in the lot) when I first looked at it but was unsure how far back the dating of these coins went. If the symbol on the left is the Roman
aqueduct at Segovia then it would certainly add to the interest of the coin to me.
Hopefully someone else knows more about these.