細節
A Kohler 'Singvogel' (Singing bird)
clockwork, lithographed many colours with key and instruction sheet (part only), in original box --7½in. (19cm) (E, box F-G, some restoration, one end flap replaced, re-lined, instruction sheet incomplete)
clockwork, lithographed many colours with key and instruction sheet (part only), in original box --7½in. (19cm) (E, box F-G, some restoration, one end flap replaced, re-lined, instruction sheet incomplete)
出版
See Mechanical Toys, A & K Spilhaus, Crown, NY, 1989, p.30