1997 Russian 1kg Silver Coin 100 Rubles Ballet. Authenticity is guaranteed and certified by Numismatic Guaranty Corporation NGC.Graded by NGC as close to perfect condition - PF68 Ultra Cameo. Mintage: only 1,000 coins. And see over 1500 coins and medals! Add a map to your own listings. The item "Russia 1997 Silver 1 Kilo kg 100 Rubles Ballet Swan Lake NGC PF68 Low Mintage" is in sale since Tuesday, September 30, 2014. This item is in the category "Coins & Paper Money\Coins\ World\Europe\Russia\Federation (1992-Now)". The seller is "worldqualitycoins" and is located in Nokomis, Florida. This item can be shipped worldwide.