Russia
USSR Olympics gold Six-Piece 100 Roubles Proof Set 1980, consisting of KM-YA163, 1977-I; KM-Y151, 1978-I; KM-Y162, 1978-I; KM-Y173, 1979-I; KM-Y174, 1979-M; KM-Y186, 1980-M. Each coin is Choice Proof as issued in capsules inside a red plush case, each 0.5 oz AGW and .900 fine. With two COAs. AGW 3.0000 oz.From the Northern California Collection
Estimate: 3500-4500 USD