1987, Mongolia (Republic). Proof Silver 25 Tugrik “Snow Leopard” Coin. NGC PF-69! Mint Year: 1987 Reference: KM-50. Denomination: 25 Tugrik - Snow Leopard Condition: Certified and graded by NGC as PF-69! Material: Sterling Silver (.925) Weight: 28.28gm Mongolia is a landlocked country in East and Central Asia. It borders Russia to the north and the People’s Republic of China to the ...