Hi All,  I've put together a simple web page with a number of pictures
of the devices in a Packard player grand piano.  While it has a number
of parts that indicate a connection with Ampico/Amphion, the expression
devices are completely unfamiliar to me.  See

  http://www.player-care.com/packard.html 

According to the research I did, Packard Piano Company was affiliated
with Welte, and in the later years Welte was using parts made by
Auto Pneumatic Co.  (I don't know of any connection to the Packard
Motor Car company.)

If you have any information about this system, please contact me and
post the information to the MMDigest.

Musically,
John A Tuttle
Player-Care.com
john@player-careremovethis.com
Brick, New Jersey, USA