China
People's Republic "Sinkiang Autonomy" Two-Piece Certified Proof Set 1985, KM-PS17. Issued for the 30th Anniversary of the Xinjiang Autonomy. Set as follows: copper-nickel 1 Yuan, KM111, PR69 Ultra Cameo NGC; and silver 10 Yuan, KM128, PR68 Ultra Cameo NGC. Included is the original case, with COA. Both pieces are brilliant, with no noticeable flaws.
Estimate: 1000-1500 USD