Your shotgun was made for Belnap by the firm Savage arms Company.These were listed under 2 models,first the Savage model 947B,second the Springfield model 947.Both shotguns are the same identical shotgun as yours.The value will range from 35-110 dollars,depending on overall condition and a good bore.
I also have a Daniel Boone shotgun, 12 guage. Do you know who made this gun? I need to replace the stock. Daniel Boone Gun Company: Trade name used by the Belknap Hardware Company of Louisville, Kentucky on firearms they retailed, 1900-1935. It is most likely a single shot or double barrel. The first would be worth $40-$80 and the second $150-$250, depending on the condition, if you can find an interested buyer (the name may generate a little interest). Finding a stock might be possible if you can determine the actual manufacturer's model. If there is a model number on the gun, it might be in Numrich Gun Parts' cross reference list, but all the Belknap guns listed are Springfield/Stevens/Savage models, so you might look for parts for their models 67, 87N, 87J, 94C, 94D, 120, 745, 940E, 947, or 947B.