This is a brass body, brass shackle, ACL (Seaboard Coast Line) railroad signal padlock probably made by Corbin. There is no key.
The ACL was served the Southeast , particularly Florida, formed in 1900, and ending in 1967 by the merger of the Atlantic Coast Line (ACL) and the Seaboard Air Line (SAL) to form the SCL.
The whole lock is cast brass about 2-3/4" high, weight about 15 ounces. The front of the lock body has "A.C.L./ SIGNAL" in large stamped line letters. That is the only lettering on the lock except for a small stamped "E" on the bottom. The keyway is on the bottom; there is no key.
This lock came from a small central Florida collection..
CONDITION- The brass body is in good used condition. The edges have slight bumps, and there are a number of dents on the front and a few on the back. The lock has a nice patina, not too dark. Because of weight I cannot ship this first class package mail but must send it priority mail; postage is offered at cost..
Check my other railroad keys and locks offered on my Ruby Lane site!