Couldn't figure out how to insert a quote but Crankshaft posted: "The obvious question, when a maker signed his work, why didn't he sign all of them ? ? "
I've read in one of the Shumway books that when a good maker made a rifle with full carving and patchbox he often signed it, but a buck and ball with no patchbox (like the one I've pictured in this thread) was often not signed. The reason may be that the buck and ball gun, being a cheaper piece to produce because it lacked rifling and a patchbox also didn't get the signature.