Upon further review.
I was looking into the gun for a buddy and now have handled it.The gun is a 16 gauge hammer gun with fluid steel barrels that is a Stevens model 235. Other then Model 235 on the bottom of the frame, Hampden Arms Co on the left side of the frame, and a Serial #, there is nothing else on the gun.
I know stevens made guns for most anyone but I can find nothing on Hampden Arms Co.
I don't think it's a Crescent. Crescent hammer guns came in two configurations. Either a "three screw" model that had three screws rear of the hammer on the left side, or a "single screw" model that had the firing pin retention screws on the side of the ball fences vs the typical Stevens pattern of having them come in from the bottom. Also, Crescent/Folsum was made in Norwich, New Loudon County in Massachusetts, not Hampden County like Stevens.More than likely it's one of the shotguns made by F. A. Crescent Arms Co, they made a good serviceable shotgun under many many names, mainly for hardware stores. They also sold some under their own name, Crescent was eventually sold to Stevens. There is a link with a list of some of the names Crescent used but now all names are known.
CRESCENT F. A. CO. All Models :: Gun Values by Gun Digest
gunvalues.gundigest.com