I see some similarities but not many. The guys had more talent with their files than with their letter stamps but boy they look alike. I do not know when my gun or lock was made. Before pulling the lock I had folks thinking this was a very early gun but I believe not. I don't think yours and mine are from the same hand. I also think the #13 on my barrel is the 13th gun he made and it shows. Well now I have a long gun with a John Roller lock what may be totally made by him , not sure , and a nice little w.g.p. flint pistol with no known maker. I love em both and thank you . if some info comes to you please do pose or email me .
thank you Keith .
Joe
jhae@sbcglobal.net