A very rare decoration, from the reign of Alexander III.
Obverse: Head of Alexander III, in the rim a legend, all in a wreath.
Reverse: Wreath, and in it a five-line inscription: ЗА БЕСПОРОЧНУЮ СЛУЖБУ ВЪ ТЮРЕМНОЙ СТРАЖЪ.
Silver, diameter 36.3 mm, weight 27.0 g.