British Colony. Sierra Leone Company bronze Proof Cent 1791 PR64 Brown NGC, Soho mint, KM1. Mintage: 400. A well-struck representative of this classic 18th century African issue, certified at the cusp of Gem. Boasting dark espresso surfaces that turn to blueberry hues when viewed in an angle. HID09801242017 © 2024 Heritage Auctions | All Rights Reserved