Mechanische Musikwerke Manufaktur, (MMM), Germany, singing bird box, the foliate engraved sterling silver case with canted corners, and a small drawer in the base, top with oval cover concealing a bird with brightly colored feathers, appearing and performing on demand, late 20th century

Mechanische Musikwerke Manufaktur, (MMM), Germany, singing bird box, engraved, gilt bombe case with polychrome enamel ornament, the top with black border, a turquoise enamel field with groups of flowers, and the lid with reclining figures in a pastoral landscape, concealing a bird with brightly colored feathers, appearing and performing on demand, late 20th century

Mechanische Musikwerke Manufaktur, (MMM), Germany, singing bird box, the gilt case engraved with c scrolls and acanthus, top also with oval door engraved with birds and foliage, concealing a bird with brightly colored feathers, appearing and performing on demand, late 20th century