This is a Hupfeld Clavitist.  I have known about this piano since
before it was listed for the auction.  The owner had it partially
restored but ran out of funds and was put in storage.  It has been
there for about sixteen years.  It originally played a 10-note
xylophone and drums and pipes, in which for my understanding the pipes
are now missing.  Also it does not have the complete pump system.
Someone had made an electric blower/vacuum contraption with a speed
control, that looks like a blower from the PPCo.  The stack had been
restored, keeping in mind it was sixteen years ago.  It has a nice case
and piano for someone who can acquire all the missing parts that are
needed.  The auction is today, April 11th.

Robert Loeffler - Roberts Musical Restorations