A late 19th/early 20th century Russian silver collapsible vodka cup, the white precious metal collapsible cup with gilt interior inscribed to the rim in Cyrillic, fitted within a round domed travel case, the screw on cover bearing Cyrillic presentation inscription, dated ‘29, III, 1906’, within ropetwist borders, the cover with stamped maker’s mark ‘BK’, possibly for Vasily Kangin, with kokoshnik mark for 1896-1908, with district assayer’s mark below, diameter 49mm. £200-300