A late 19th century silver singing bird automaton music box

A late 19th century silver singing bird automaton music box, probably German, in the manner of Karl Griesbaum, of shaped rectangular form, the top with oval hinged cover decorated with a figural scene, opening to reveal a feathered automated bird and pierced grill, the box repoussé decorated with birds amongst scrolling foliage, with applied opening catch in the form of a bird, hinged compartment to the reverse concealing a key, 10cm wide