Yesterday I was at the Mechanical Music Museum at San Francisco's Cliff
House; they have two of these player pianos with pinned wooden barrels.
They have been electrified, but originally were cranked by hand.  I
didn't realize these were especially rare or unusual; I thought they
fall in the category of barrel or street pianos, which were quite
common in Europe and manufactured until recent times.

Larry Lobel
Virtuoso Piano Service
Petaluma, CA

 [ The distinction is in what moves the hammer.  The pin of a barrel
 [ piano both selects the note and moves the hammer, but the Pianotist
 [ is like the electric typewriter: a key falls into the hole of the
 [ thick music roll, and the hammer-moving force is provided by the
 [ spinning drum.  Just as in the electric typewriter, the hammer
 [ velocity can be changed from slow to fast by making the impelling
 [ drum rotate faster.  (For 'carbon copies?'  ;)   -- Robbie