There is a post about a Niagara Musical Instrument Military Band Organ
on the Busker Organ Forum run by Melvyn Wright.  The story is a bit
vague, not even listing the country where the organ is located.  The
author, an amateur busker organ builder, lives in British Columbia,
Canada.

From the single photo it looks like it might run to 15 melody notes
with 3 registers, both bass and trombones, 2 percussion.

This might be a "missing organ."  Further information might be useful
to our community, and the owners might also gain from contact by
"hard-core" MMD folks.

Attic Find Roll Playing Music Machine
https://www.tapatalk.com/groups/buskerorgan/viewtopic.php?p=6364#p6364 

Wallace Venable

 [ There are some nice photos in the buskerorgan group on tapatalk  --
 [ the discussion group referenced by the URL above.  In order to see the
 [ photos, I found it necessary to register (for free) to the discusssion
 [ forum (it was easy) and the photo access was not granted until I clicked
 [ on the "confirmation" buttion in the e-mail that the website sent me.
 [ It wasn't hard and only took a couple of minutes.  --Jody