RUSSIA. Ballet Proof Set (3 Pieces), 1995-(L). St. Petersburg Mint. All NGC PROOF-70 Ultra Cameo Certified.1) Platinum 150 Rubles. KM-Y-444.2) Platinum 50 Rubles. KM-Y-443.3) Platinum 25 Rubles. KM-Y-442.Elegantly designed and superbly struck, this flawless trio offer a brilliant nature to the fields and great frosting to the minimal aspect of the devices.