The Junkunc Bros. - American Lock Company which dates back to 1912 introduced their solid steel padlock bodies in the 1920s. In 2003 American Lock was acquired by Master Lock Co. who shortly thereafter laid off 400 employees and shuttered the plant in Crete, IL. The machinery was moved to Milwaukee where components are now manufactured before being shipped to Mexico for assembly. The AH10D is still offered under the American Lock marque with a suggested retail of $28.90 ea. Many American Lock bodies are stamped with a date code to indicate when the lock body was made: Z=Jan, Y=Feb, X=Mar, W=Apr, V=May, U=June, T=Jul, S=Aug, R=Sept, Q=Oct, P=Nov, O=Dec;
N=1, M=2, L=3, K=4, J=5, I=6, H=7, G=8, F=9, E=0. Thus X H J x = March 1975, disregard the last character.

Pete Schifferli