Sierra Leone
British Colony. Sierra Leone Company copper Proof 50 Cents 1791 PR62 Brown Cameo NGC, KM5a. A very rare proof in copper, a scattering of bagmarks present in the fields, yet the whole of the piece appears definitely sharp and proof, with the bright-dark contrast between surfaces and devices making the features seem to jump out at the viewer.
Ex. Jamestown Collection
HID02901242017
Estimate: 800-1000 USD