Great Britain
George III Counterstamped Bank Dollar ND (1797-1799) AU Details (Obverse Tooled) NGC, KM623. Displaying oval bust of George III counterstamp (AU Standard) on a Bolivian 8 Reales 1795 PTS-PP of Charles IV (cf. KM50). Though lightly smoothed on the obverse, signs of die clashing still appear quite easily to the careful observer, while a stark die shift is observable on the reverse.
From the Engelen Collection of World Coinage
HID02901242017
Estimate: 400-500 USD