China
People's Republic Four-Piece "Lake Placid Winter Olympics" Proof Piefort 30 Yuan Set 1980, 1) Speed Skating - PR68 Deep Cameo PCGS, KM-P152) Alpine Skiing - PR69 Deep Cameo PCGS, KM-P163) Biathlon - PR68 Deep Cameo PCGS, KM-P174) Figure Skating - PR64 Cameo PCGS, KM-P18All coins are bright and exhibit little tone. The figure skating piefort exhibits light cloudiness with a few scattered marks.
Estimate: 5000-6000 USD