Enameled sterling silver musical bird box, the 935 silver case with amethyst guilloche enameled panels all around, the oval bird car...

Enameled sterling silver musical bird box, the 935 silver case with amethyst guilloche enameled panels all around, the oval bird carved ivory top concealing a pop up feathered bird that sings, ivory sliding on/off switch, ivory feet, base marked "935/sterling/Germany", with original key and carrying case, 4 1/4" w, 2 3/4" d, 2 1/4" h, excellent working condition