Great Britain
George III copper Proof Bank of England Dollar of 5 Shillings 1804 PR66 Brown NGC, KM-Tn1a, ESC-1935 (old ESC-152), thick flan. On obverse, stop after REX, leaf to center; on reverse "K" in relief. Even chocolate brown color, with fully mirrored fields. The finest certified example of this type.
Estimate: 3000-3500 USD