The LOTT locks were imports during the 60's/'70's. It was a very correct, architecturally, for the early TG's and other early English guns. I used them, by filing off the LOTT, and engraving or whatever for a lot (pun intended)of custom rifles I built back then. It was the only thing available at the time and was, back then, actually a terrible lock, functionally. Main problem, was a very weak mainspring.When I started working with olde Curly Gostomski in the late '70's he used this, again, cuz'n there wasn't anything else. In the course of always complaining about about these things, the LOTT name discussion also came up. As I remember, it was determined that the name was of the, I believe, Italian, manufacturer that just put it on the face in the script and style of an original, period lock. About 1980, give or take a couple of years cuz'n I'm getting olde too, was when Curly began making his own locks, primarily because of function, not accuracy of style. I started retrofitting the LOTT locks we still had with North Star's new mainsprings and bingo, the LOTT lock really worked. I even called back some of my custom guns to fix them. To kinda rap up my rambling, I don't believe the LOTT lock was based on anyone we could ever find any history on. Don't know if'n this helps or just helps confusiin' things more.