Feltwad,
Your postings are appreciated more than you will know.Most Americans have little appreciation for this level of craftsmanship and those
English lock filers were showing a contempt for low end work.The late Australian Master Engraver Lynton McKenzie got me interested in these locks and would loan on request any of these he owned and even removed one from an Alex Henry target rifle and then another from a Rook Rifle plus a Rigby and by paying close attention to the smallest details I was able to copy them and in 1987 I made and sold the first "4 pin"
Stanton copy. Others followed,no big numbers but no complaints either.A builder of Schuetzen rifles in Germany was sent one of my Schuetzen locks with the "3 pin" Stanton mechanism and I made a good number of them for several years,He called the bridle "Der Kreuzstudel"(Kroits stool"). Getting paid for labor intense and fancy locks is not easy and were made only on request.I did make 4 of the Alex Henry's for of all places,Dixie Gun Works and was paid full price when they were done.The buyer was Hunter Kirkland,Turner'son.
Bill Roberts,Jim Westerberg and myself made these on a limited basis and I never heard of one of them doing it on request.
The flintlock shown here is not a complex internal pattern and the tumbler is a style that has a specific,wider area for the fly or it may not have a fly for use with a single trigger. I hope this isn't too boring.
Bob Roller