Hello!  Ingmar Krause wrote, "There also have been converted
harmoniums with Ariston discs at the side."

As far as I know, the disc-playing reed organ is a typical Swedish
instrument.  The classic one is Nystroem's Reform Organ, which uses
somewhat larger discs than the Standard Ariston.  (I think they are
unique; in any case they are _not_ Riesen/Giant Ariston discs.)
The crank and turntable is placed vertically on the right side of
the organ.

Now I have myself a little disc-playing organ by "Lindahl" (and I know
of similar instruments by "Lindholm") actually playing 24-note Ariston
discs, albeit with enlarged drive-holes to relieve the tension on the
press-span/fibre board on this rather heavily-cranked instrument.
The turntable is placed on top of the organ, and the crank movement is
transferred to the turntable by a series of axles and gears which have
to be adjusted weekly (if not daily).

Best regards from Stockholm
Christofer Noering