J. Donat Langelier Organ with Transposable Keyboard

Description

This organ is from J. Donat Langelier, Montreal.  We are told that it dates from around 1900 and that Langelier was a retailer, not a manufacturer.  However, there is no other marking that we can find except the identifying numbers located both on the inside and out as shown in the photos.
This organ has a transposable keyboard (the keyboard can be lifted and easily shifted to change the key of play).  It has been in storage so may need some tender loving care.  It belonged to my father who left it to us.  I know he found it in the basement of a church in Canada and purchased it for his home in Oregon sometime around the 1960's.  Unfortunately, we don't have more information about it.
Please note that the item is being sold for local pickup.
We have no idea what this organ is worth, but just want it to go to someone who can appreciate its unique keyboard feature.