German, Singing Bird Box, key wound, actuated at will with slide on right front of case, the bird singing for his audience and then disappearing from view, from Karl Griesbaum factory, in a light violet guilloche enameled case with a carved ivorene cover

German, Singing Bird Box, key wound, actuated at will with slide on right front of case, the bird singing for his audience and then disappearing from view, from Karl Griesbaum factory, in a light violet guilloche enameled case with a carved ivorene cover over the bird and four ivorene feet, & slide with 4 tiny roses, late 20th century. includes key and singing well, birds feathers and beak intact; flaps feathers and dances about while "singing". Very nice quality. 3 x 4"