Sierra Leone
British Colony. Sierra Leone Company silver Proof 50 Cents (1/2 Dollar) 1791 PR64 PCGS KM5, Vice-FT3A. Dappled grey toning throughout, with subtly reflective surfaces. From a reported mintage of only 54 pieces, and one of just 8 examples seen in total by NGC and PCGS.
HID02901242017
Estimate: 5000-6000 USD