I read some notes by Dave Kerr in the MMD Archive,
  http://www.mmdigest.com/archives/Digests/199704/1997.04.07.02.html 
and I saw his video on YouTube,
  http://www.youtube.com/watch?v=zf5pM2SEo-g 

Does anyone have more information about the post-WW2 Aeolian keytop
piano player?  I'd like to learn more and maybe even acquire one
if any are available.

Thank you,
Bill Budenholzer

 [ MMDigest articles about this rare mechanism are indexed at
 [ http://www.mmdigest.com/archives/KWIC/Numbers/1950.html 
 [ -- Editor (Robbie)