Great Britain
George III counterstamped Dollar ND (1799-1804) VF Details (Chopmarked) NGC, S-3766, ESC-140A. Issued by the Bank of England stamped with a large octagonal incuse block containing a portrait of King George III. This 8 Reales of Carlos IV, made at Lima, Peru in 1797. In addition the coin is "chopmarked" essentially meaning it changed hands on three different continents. Quite a historic emergency issue.
Estimate: 600-800 USD