In the comments under his post "Fascination with the key of G | Organ music" (https://www.palnet.io/palnet/@contrabourdon/fascination-with-the-key-of-g-or-organ-music) 
The organ was build by the firm of Cavaillé-Coll, the famous and genius French organ builder of the 19th century. It was build in 1910, 11 years after the death of Cavaillé-Coll, by his sucessor Mutin. So, it is not a 'real' Cavaillé-Coll, though it comes close enough in sound and esthetics.
It is a small instrument, not to be compared with the great instruments in large churches and cathedrals. The sound is more direct and more intimate. Though in full registrations the sound is quite impressive. Despite its being a small instrument, a large portion of the French Romantic organ reportoire can be played faithfully on this instrument.
As an example I choose the Andante from Lefébure-Wély's Meditaciones religiosas, op 122. An intimate composition that fits this instrument perfectly.