You might would try "DIXIE GUN WORKS" out of UNION CITY, Tennessee, they have a butt stock that I believe can be fitted to most any old Crescent Double. They do carry a variety of different butt stocks and if they don't have an exact match, if you do much wood working or know a good gunsmith they probably have somthing that could be easily match to fit your shotgun and still retain an original look.
Try gunstocksinc.com good luck
Try gunstocksinc.com
try e-gunparts.com
try gunstock inc. they have them
try gunstocks inc
the knickerbocker was made by crescent arms Look under Crescent Tryon firearms
stock is standard american walnut, no stain.
No
as your looking down the gun, the gauge should be stamped on the left barrel back by the stock.
At Gunstocks Inc.
Try e-gunparts.com, Shotgun News, Gun List, do a web search on "shotgun stocks".
LONG out of production, the company is no more. You may find a used stock at gunpartscorp, but you would need a match to the correct model- there were dozens.