auctionarms.com sold one recently for 63 dollars.
The Savage model 63 single shot .22cal rifle was produced from 1970-1972.
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.
Basically a Savage Model 63 single-shot bolt action .22. I have some parts for that model. firstname.lastname@example.org
In order to give you a good answer to your question,I would need to know the serial number of your Model 63(to date the production year) and the overall condition of the blueing,wood,and bore to give you a accurate answer as to value.
Had 2.Sold one a few weeks ago for $750
bout 350 in most places in like new condition