A silver, gold and enamel Art Deco cigarette case, J. Trottin, Paris, retailed by G. Keller, circa 1925/30, rectangular with rounded corners, both sides decorated with graduating zig zag bands of black enamel on a polished surface, onyx pushpiece, the interior silver-gilt lined and fitted with a geometrically-pierced holder, maker’s mark, French mixed metal control mark for silver and gold, the rim engraved: 'G. Keller, Paris',

A silver, gold and enamel Art Deco cigarette case, J. Trottin, Paris, retailed by G. Keller, circa 1925/30, 

rectangular with rounded corners, both sides decorated with graduating zig zag bands of black enamel on a polished surface, onyx pushpiece, the interior silver-gilt lined and fitted with a geometrically-pierced holder, maker’s mark, French mixed metal control mark for silver and gold, the rim engraved: 'G. Keller, Paris',

rectangular with rounded corners, both sides decorated with graduating zig zag bands of black enamel on a polished surface, onyx pushpiece, the interior silver-gilt lined and fitted with a geometrically-pierced holder, maker’s mark, French mixed metal control mark,

13cm., 5⅛in. high