Hi, I’m letting this coin go on eBay. It’s a rally scarce piece and has george (IV) named prince regent. I believe this and a couple of other coins from Wolfenbuttel are the only types to call him this. All Hannoverian coins and British/ Colonial stayed as GIII until his death. https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.co.uk/ulk/itm/292382003179