*Sierra Leone Company, silver proof 10 cents, 1791, obv., sierra leone company, africa in exergue, crouching lion on hilltop, rev., ten cent piece, clasped shaded and unshaded hands, '10' above and below, edge plain, 2.63g (Vice FT 5A; KM3), tiny flaw in field above lion, choice mint state, misty toning with a hint of green, rare. 109 examples struck by Matthew Boulton between 1793 and 1799.
(800-1000 GBP)