I'd say that it is most probable that this is a Folsom W Richards made by J P Claybrough in Birmingham. If it was made by Richards of Liverpool or a related firm it would have the address on the rib. Really, the only other, very slim possibility, is that it was made "in the trade" in Birmingham, for an unknown company in London also using the Richards name. Not much evidence for that. Lack of a complete address on the rib is somewhat indicative, as at that time gun makers could put about anything on guns simply for marketing purposes. Now it would be called misrepresentation, but back then it was common, in an attempt to associate guns with better makers, such as Westley Richards. It's still very common to find W Richards Folsom guns, both those made in Birmingham and the later Belgian guns misidentified by dealers as being made by Westley Richards.
Yours appears to be a mid-grade Birmingham gun of good quality, made to the Birmingham standards of the day. Much better quality than the later Belgian guns.
I think that if you review pictures of Birmingham guns marked W Richards and FA Loomis, and compare them to JP Claybrough guns of the same period you'll find them very similar.
Last edited by Ken61; 09/18/17 06:43 AM.