MONGOLIA. 750 Tugrik, 1976. NGC PROOF-70 Ultra Cameo. Fr-1; KM-38. Conservation series: Przewalski s (Mongolian Wild) Horses. Mintage: 374. Tied for finest certified with two other examples on the NGC population report. Brilliant and flawless, with hard mirrored fields and frosted cameo devices. Free from tone, haze, and fog.