Russia
Russian Federation "Swan Lake" Four-piece gold Proof Set 1997, with 1 oz gold-plated mint medallion showing that this is set 50 of 500 produced, 10, 25, 50, and 100 Roubles, KM-569, 571, 572, and 574, all Gem Proof in the original case. AGW 0.9 oz.
Estimate: 2000-2500 USD