It's a tradename gun made by Folsom/Crescent for Hibbard, Spencer, Bartlett & Co., Chicago. More information here
https://docs.google.com/document/pub?id=1OxZo5Tkvx2G8eYf747QR9B5RJdN6Siu5JGIhfguSXXQSemi-inlet stocks are available for Crescent guns
http://www.ebay.com/itm/Crescent-America...=item19d52d9313Crescent tradename guns are frequently offered on the gun auction sites like gunbroker.com, and it might be easier to purchase a 'parts gun' for the stock, which will still require fitting to your receiver by a wood specialist.
It might be easier to have the stock repaired - check out this thread
http://www.doublegunshop.com/forums/ubbt...nt=2&page=1