12 gauge shotgun.there is a single bead as with many sxs. So correct, it is a shotgun. (I didn't know that Cashmore made rifles, if I get into collecting that sounds like something I would want to get my hands on).

As for getting a rough idea of price, if there are not enough photos in the link let me know and I will try to get more. But will likely be a few weeks before I see said gun again. The most notable unfortunate damage to the gun is that the left hand side hammer has been brazed back on after it somehow became detached.