China
People's Republic Three-piece lot of silver Piefort Proof 30 Yuan 1980, 1) Speed Skating - PR67 Ultra Cameo NGC, KM-P152) Alpine Skiing - PR69 Cameo NGC, KM-P163) Biathlon - PR68 Cameo NGC, KM-P17All are full brilliant, with deeply mirrored fields and only the most minute marks.
Estimate: 3000-3500 USD