Looking for any info. Back action hammer gun, non-rebounding locks, side lever. with a wedge attachment for the fore arm. The rib is marked London, but no address. Nice gun, but probably marked London for an iron monger. Seems heavy, and with 32" twist barrels with no choke make me think 1860's or 70's. Fore end tip the first I've seen with light colored horn. The inside of locks and action are case colored, but the exterior is a pleasing peacock blue. Not my gun so I don't have photos. Thanks, Mark