in the center of the disk is the emblem of the Bank of Russia (double-headed eagle with 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" below - the "2003" 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 a centaur with a bow and arrow against the stars, to the right is the zodiacal sign of Sagittarius.
Artists: S. A. Kozlov, A. D. Schablykin.
The Sculptor: A. A. Dolgopolova.
The constellation Sagittarius contains 204 stars visible to the naked eye. Located in the Northern hemisphere.
Source: Bank Of Russia