MP - this is all i have right now as the Rifle is en route for UK! I have assumed the serial number shown pertains to LG Thomas numbered rifles made by himself.
Thanks we can start up again when you get the rifle and have a better chance to look it over.
I believe Mr. Thomas was a machinist by trade and may have worked on the first atomic bomb.
My notes show a book title "The Life and Times of Leon Grappe Thomas" I have not found a copy.
Leon G. Thomas 1905-1963 for others who want to research him.
I have two Thomas numbers 343 and 348, I would be very surprised if there were 40 much less 348 rifles with the Thomas name on them.