Tanzania
Republic 3-Piece gold & silver "Conservation" Proof Set 1974,
1) silver "Giraffes" 25 Shilingi - Proof, KM7a
2) silver "Rhinoceros" 50 Shilingi - Proof, KM8a
3) gold "Cheetahs" 1500 Shilingi - PR68 Ultra Cameo NGC, KM9. AGW 0.9675 oz.
cf. KM-PS2 (for 2-piece silver set). A difficult complete Proof set, all with strong cameo contrasts, and including the gold 1500 Shilingi, of which only 866 Proofs were minted.
https://coins.ha.com/itm/tanzania/tanzania-republic-3-piece-gold-and-silver-conservation-proof-set-1974-total-3-coins-/a/3082-34843.s?type=CoinArchives3082
HID02906262019
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Estimate: 1500-1700 USD