A RUSSIAN GUILLOCHE ENAMEL BELL PUSH WITH GOLD AND CABOCHON CENTERPIECE, WORKMASTER IVAN BRITSYN, ST. PETERSBURG, 1908-1917 of square shape with rounded corners, enamelled overall in transluscent oyster white over wavy guilloche ground, the stepped body supported by four bun feet, centred with a chalcedony cabochon pushpiece surrounded by a gold floral ornament, marked with 84 standard and workmaster's mark Britsyn in Cyrillic for Ivan Savelyevich Britsyn; length: 5 cm (2 in.), weight: 91.6 g (2.945 ozt)