Hello Jon,  The German mechanical music museum near Heidelberg
is located in 68526 Ladenburg, and the owner is G. Bartmann.
Tel: 06203-15335 or -14222

It is not a huge collection, but you have inside some interesting
instruments.

Best regards from France

Francoise Dussour -- Mirecourt  16.11.98
fdussour@club-internet.fr