A GERMAN SILVER 'SINGING BIRD' MUSIC BOX, PROBABLY KARL GRIESBAUM, 20TH CENTURY shaped oblong, set with red pastes, the cover with musical instuments opening via the side pull for the feathered bird automaton to emerge from gilt grilles, flanked by shells in matted panels, the sides with further panels with profile medallions and floral swags, on mask and scroll bracket feet, stamped 925, reichsmark, STERLING and ER?, with key 11cm wide