I would like to find out who made a 'Pianovo' barrel piano and do any
others exist today in collections or museums?  As follows:-

Oak case, coin-operated, small European coinage (English 20p, 1p or
6d coins will fit), slot at left of case.  There is an internal switch
for 1 or 2 plays per coin.

35 playing notes, iron frame, straight strung.

Keyframe notes are

1 is  sustain / loud
2-19 are playing notes
20 is half-blown or 'soft'
21 pulls down an interchangeable mandolin rail  = leather + metal
   or soft rail = just two felt strips.  You can swap over these
   two rails in a few seconds.
22-38  are playing notes
39 is a duplicate of 21, possibly needs pressure from two keys
   to pull down the mandolin / soft rail.

A clockwork motor is just below keyframe at the front and is wound at
left side of case; speed control at left.  The spring is dated April
1920.

An oval mirror in top centre panel is surrounded by a small amount of
blue and green coloured glass.  There are cloth backed panels either
side of the mirror.

An unusual kicking-shoe action with a large metal roller rotating
constantly; the key shoes are kicked by the roller to play the note.

 [ This sounds like the Pianotist mechanism.  -- Robbie

The back of the piano has a wire gauze covering on a frame to allow
air-flow, while keeping insects out.  (I need a supplier for this fine
gauze, 1 meter square in size).

There are two five-tune barrels, which can be changed over in a few
seconds.  Simply lift a lever and the barrel slides out of the front of
the case, there are even 2 finger holes to aid quick removal of the
barrel.

The coin box did have a lock, now missing, and is not accessible without
removing the barrel.  The coin box is huge and would hold several
hundred coins.

As the barrels were standard to fit many machines does anyone know of
spare barrels?

Any help or suggestions appreciated,
sincerely,
Kevin McElhone, M.B.S.G.B. England.