in the center of the disk is the emblem of the Bank of Russia (double-headed eagle c the lowered wings, under it an inscription a semicircle "БАНК РОССИИ" framed by a circle of dots and inscriptions around the circle: at the top – "ПЯТЬДЕСЯТ РУБЛЕЙ" at the bottom – "2006" on the left – label of metal, test of an alloy to the right is the contents of precious metal in cleanness and trade-mark of a mint.
the image of St. George on a horse spearing a snake.
Artist and sculptor: A.V. Baklanov, national artist of Russia.
SV. George the victorious – Christian Saint. Over the centuries, his image is placed on the coins used in the state symbols.
Source: Bank Of Russia
There is also a variety with the sign of the Saint-Petersburg mint