Welcome!
Here's a good write-up on the evasion-copper topic:
http://www.coins.nd.edu/ColCoin/Col...t.intro.htmlThe one you've found seems particularly interesting, though. The GEORGE RULES legend on the front was paired with a number of reverse legends, particularly BRITAINS ISLES (to complete a little sentence). The Irish halfpenny reverse with HISPANIOLA instead of HIBERNIA appears to be much less common, and I have yet to find a reference to it being paired with the GEORGE RULES obverse. One rare HISPANIOLA harp reverse is usually found with the legend AUCTORI PLEBIS on the other side; that one will have the divided date 17 36 to either side of the bottom tip of the harp. Any chance you could post a picture for us?