OK, so here's the lock info for anyone who is interested. The lock is made by Thirard FTH based in [COLOR=rgba(0, 0, 0, 0.87)]Fressenneville, France. This particular lock was supposedly to commemorate the first flight of the Concord to reach mach 2 which happened November 4, 1970, although I can't find what year it was issued. [/COLOR]