[ Ref. Rowland Lee in 150818 MMDigest ]
 [ http://www.mmdigest.com/archives/Digests/201508/2015.08.18.02.html ]

As far as I am aware, there was exactly one Aeolian Duo-Art
Orchestrelle manufactured.  I believe it is in The Nethercutt
Collection in San Sylmar, California.  It's unlikely this instrument
has been broken up for parts, so I doubt the item offered for sale
is from it.

Aeolian origin looks possible but I doubt there is any connection
with either Duo-Art or Orchestrelle.  A 61-note compass also puts it
outside of the Orchestrelle's 58-note range.

John Grant