[ Ref. Dwayne Stagg in 210322 MMDigest ]

Not only do pipe organ player units not use piano rolls, there are
several proprietary units from different builders. Judging by the stops
listed, this one could well be from a small (three ranks and chimes)
Aeolian residence organ. Aeolian built more residential organs (and
most had players) than any other builder and thus "may" have more rolls
out there than for other builders.

Dennis Steckley