CNG 111, Lot: 924. Estimate $5000. Sold for $9500. This amount does not include the buyer’s fee.

COLONIAL AFRICA, British. Sierra Leone. Sierra Leone Company. 1791-1807. Proof AR Dollar (36.5mm, 6h). Soho (Birmingham) mint. Dated 1791 (but struck between 1793 and 1799). SIERRA LEONE COMPANY, lion advancing slightly left, head facing; AFRICA in exergue / ONE DOLLAR PIECE, clasped hands; 100 above and below; date in exergue. Vice FT.2A; KM 6. In NGC encapsulation, 4726278-001, graded PF 63. Toned. Very rare.

Vice cites only 40 proof examples struck for Matthew Boulton’s customer between 1793 and 1799.