The majority of Philipps Pianellas play the standard Philipps Pianella
Mandoline roll, designated PM.  This became the standard for most
Philipps orchestrions as it is fully orchestrated including all pipe
registers and percussion required for the largest orchestrion.  The
same roll will play smaller instruments designed for use in public
places including the basic electric piano and the xylophone piano.
Philipps pianos designed for use in the home used other rolls.

Some of the larger orchestrions used the Pianella Cecilia, PC, which
looks the same but has a reduced note range and a few more registers.
These scales are given in the excellent book by Art Reblitz and
Q. David Bowers, 'Treasures of Mechanical Music'.

The Pianella C that Françoise refers to is probably Pianella Corona,
which was a model designation, rather than being a reference to the PC
roll.

Philipps exported a few orchestrions to Wurlitzer in the early days,
who then developed their own range of orchestrions, based heavily on
the Philipps designs, and parts, and redesignated the PM roll as the
Wurlitzer Mandolin PianOrchestra.  The Cecilia became the Wurlitzer
Concert PianOrchestra.  The result is that Pianella owners can play
Wurlitzer Mandolin PianOrchestra rolls on their machines as well as
original and recut European PM rolls.

In the last few years I know that second-hand PM rolls have been
obtainable from European dealers such as Arthur Prinsen, Werner Baus
and Siegfried Wendell.  Buying second-hand original rolls is a bit of
a gamble as rolls were made by a number of independent suppliers, with
varying quality of musical arrangement.  In general, original Philipps
rolls are good, but very hard to find.  Symphonia rolls, made by Eugene
de Roy, are the worst in my opinion.  Please note that this comment
does not apply to the new rolls cut under the Symphonia name by Marten
van der Vlugt, which are excellent, but, unfortunately, I believe that
he doesn't cut PM rolls.

New Wurlitzer MPO rolls are advertised by Frank Himpsl on his Valley
Forge web site, and I believe these are copies of Wurlitzer originals.
It is also worth looking for the recuts of Wurlitzer MPO rolls cut by
Play-Rite in recent decades.  In my experience these are excellent.

If you manage to get hold of any Wurlitzer rolls you will need to
re-spool them.  Like most American orchestrion rolls, the Wurlitzer
rolls are wound onto cardboard cores and are designed to be fitted to
a metal chuck assembly for playing.  European rolls are individually
spooled onto well made wooden spools and include adjustments for paper
width and tracking.  PM spools must be made to the highest degree of
accuracy due to the very small tracker bar spacing and the lack of any
automatic tracking system.

The Philipps Pianella with xylophone is a very effective instrument
especially when playing popular, well-arranged music.  The xylophone
employs a reiterating mechanism and the piano has both pedals
controlled and a pneumatic regulator for a variable vacuum level.
There is also a mandolin rail.

With best regards from the United Kingdom of Great Britain and Northern
Ireland, Nicholas Simons