Please find attached a picture of some book music that I have.
Can anyone identify the machine it operates, please?  They were sold
in London by Imhof & Mukle and some say "Piano Executant Artiste -
invention et execution francaise."  They are 21.5 cm or 8.5 inches
wide.  My guess is some kind of pneumatic piano.  Many thanks for
your help.

Brian Chesters

 [ I put the photo at http://mmd.foxtail.com/Pictures/  -- Robbie