This coin isn’t in the best shape, but 4 reale coins are an extremely rare find.  Moreover, this coin is counterstamped with by the Bank of England with a King George III stamp.  It was minted in Madrid, got stamped in England, then ended up in a Chester County field.

This isn’t the oldest Spanish silver I have found, but it is the rarest.  I now have the half reale the 1 reale, the 2 reale, and 4 reale Spanish coins.  Just need the 8 reale.

The short story of the find is in the original blog entry.

Found: 30-Mar-2021; Location: field; Machine: E-Trac.