China
People's Republic silver Four-Piece Proof Panda Set 1991, 1) 10 Yuan (1 oz), KM386.22) 10 Yuan Piefort (2 oz) (10th Anniversary), KM3563) 50 Yuan (5 oz), KM3534) 100 Yuan (12 oz), KM354All are Choice Cameo Proofs. Included is the original case from an aftermarket seller, with COA #28 of only 650 sets.
Estimate: 800-1200 USD