Crosman is owned by Wellspring Capital Management. They are a privately owned company. They are located in the Leaver House in New York.
See the link below for the Crosman 454 Owners Manual.
I would give Crosman a call. The stock is a custom part but I that will sell it outright see the link below...
Contact Crosman directly. See the link below
The CROSMAN 760 Powermaster started production in 1966 then went through 8 different changes and ended in 1991
Swiss Arms, UTG, BSA, Daisy and Crosman
(CROSMAN 160) It is hard to say what the value is with a stripped stock. But here is the current value un-stripped. 100%=$200, 90%=$145, 60%=$90 Mfg: 1955-1956
Shoulder stock. Grips, Breech, Barrel, Sights, Trigger. Just about everything.
I can not find any reference it any Catalog on a Crosman model 37 pistol. Crosman makes a 357 version and a 338 version. Check your information again an re-post your question. ( it is possible that my catalog's are missing this model. )
It appeared around 1966 Source "Blue book of airguns."
The Crossman r76 comes with a folding stock. If you are trying to find a replacement, you should ask the manufacturer if they sell them seperatley, as they will not be in stores.
You will have to contact Crossman. No reliable factory published data I am aware of.
where can i find a stock for a bayard arms 12ga.double barrel