France
Republic platinum Proof Piefort 50 Francs 1977 PR69 Ultra Cameo NGC, Paris mint, KM-P592. Mintage: 19. An extremely rare platinum issue, preserved in near-perfect condition, with a strong cameo appearance that results from frosted design elements and mirror-like reflectivity in the fields. Highly collected as a design type, which makes issues like the present coin, with a minuscule mintage just below 20, incredibly desirable.
HID02901242017
Estimate: 7000-10000 USD