Zaire
Republic gold "Leopard" Proof 100 Zaires 1975 PR70 Ultra Cameo NGC, KM11. Mintage: 279. A penetrating deep cameo coin with endless mirrors and starkly frosted devices. A very important coin for the Conservation Series collector as this is the only example of the type thus far certified as PR70 by NGC or PCGS.
Estimate: 5000-7000 USD