Alex, we don't have enough info to give you an informed opinion. Generally, a Simmons rib gun will bring a higher price than a plain barrel gun, and a lower price than a solid rib or Winchester vent rib gun, all other factors being equal. Look for an offset proof mark on the barrel to indicate whether the rib came on the gun or was fitted aftermarket. An offset proof mark will boost the value compared to an aftermarket rib. As to price, it will also depend on gauge, barrel length, choke, barrel steel, wood type, pad vs. plate, etc. If it's a 12 gauge, replacement factory butt stocks can be hard to come by. For small bores, there are still new factory wood sets available.
