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
Shoulder stock. Grips, Breech, Barrel, Sights, Trigger. Just about everything.
(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
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