German State of Brunswick Luneburg Calenburg (later to be Hannover) silver 2/3 thaler or taler, 34mm.
George III was concurrently King of Great Britain and Duke of Brunswick Luneburg Calenburg.
Certified by NGC to XF 45, Population Census: This coin, only 3 higher.
Obverse: large 2/3 with German titles, mint fine silver (nearly pure).
Reverse: British titles with Integrated arms of German State and Great Britain.