I believe this is a RR-25 Bresset 16U. I’m new to attributing coins, and would like some input if I’m wrong or right. I believe it’s correct. It’s the only one i can. Find with the (+) on Vernon and Lib.
Looks good to me. 1788 VT 1/2P Bust Right, RR-25, BN (Regular Strike) Post-1776 States Coinage - PCGS CoinFacts
You are correct, some of these were overstruck on Irish halfpennies, look it over closely for any evidence of an undertype.