The OP's gun is a S&W revolver with stocks from a H&R model gun. I agree with an earlier poster as to value being $75 to a little lower high end of just over $100 in that condition assuming it is complete and functional.

Adding to other stories my first 1911 was a WWII vintage Remington Rand recovered from the back of a garbage truck. Thrown away by a recent widow the gun looked nearly unfired.
Was waiting at a local bar one day for my brother and had a conversation with a fellow next to me. He told me when they cleaned out his grandfathers place his dad threw all the old muzzle loaders into the next door river. - Yes I bet many old guns met that type of fate.