Beginning in 1959 the pentagon mandated that all padlocks for
all branches of the military be marked "US". This being said we are not able to
correctly designate all locks marked with "US".
Locks marked "US SET" are part of a group of locks. The group may be keyed alike, or
master keyed, or grand master keyed, or great grand master keyed.
Yale & Towne Mfg. Co.
"U.S." - "YALE". 2" high x 1 5/8" wide. Brass body. Steel shackle. Yale standard
lever. Mfg by: Yale & Towne Mfg. Co.
US Patent #192847.
"The Mike Pitman Collection"
;)