I’ve been studying old clasp lid locks on vintage and antique wooden machinist tool chests for some time now. Eagle Lock Co. are the most popular. Gerstner used them with key numbers A41Nxx and A50Mxx. The locks had 3 lever tumblers.
I’ve been able to chart how to cut all 48 of the A50Mxx keys. I’d like to do the same for the A41Nxx keys, but I simply don’t have enough sample keys or pictures to establish cutting patterns. Anybody have some useful input?
