Enrico Salvinelli SxS shotgun

Hi, I have a nicely engraved 12 ga. sidelock double mfg. by Enrico Salvinelli, in Gardone, Italy. It has two triggers and extractors, and comes in the original box. Has anyone heard of this make, and what this gun might be worth. It is the same spelling, and town as the Dumars and Salvinelli high grade doubles, but does not appear to be one of theirs, as the makers name is on the water table, and the box. Thanks, Ron