Thailand
Rama IX gold "White-Eyed River Martin" Proof 5000 Baht BE2517 (1974) PR69 Ultra Cameo NGC, KM-Y104. Mintage: 623. A nearly flawless gem from the highly-collectible Conservation Series, this luminous example features jet-black pools of reflectivity and superb cameo contrast. Featuring the beautiful image of the White-Eyed River Martin, one of only two birds endemic to Thailand. Absolutely rare in this deluxe classification.
Estimate: 4000-5000 USD