Group pf silver and polychrome enamel objects

a) Cigarette case in silver and polychrome enamels,marks of Nikolai Zverev, Moscow 1896-1908, 2x7.5x6 cm., weight 117 gr b) Vodka glass in silver and polychrome enamels, marks of Sergej Shaposhnkov, Moscow 1896-1908, h.5 cm., weight 36 gr. c) Mouthpiece in silver and polychrome enamels, Russia 19th century, 3x11 cm., misure diverse