A late 19th century German silver 'singing bird' automaton music box, of rounded rectangular form

A late 19th century German silver 'singing bird' automaton music box, of rounded rectangular form, the top with oval hinged cover decorated with putti releasing a caged bird, opening to reveal an automated and feathered singing bird and a gilt grille, within a border of birds of paradise and flower garlands, the sides decorated with putti, flowers and leaf scrolls and applied with leaf and flower cast operating lever, '800' standard mark, 10.5cm wide