This brass railroad caboose or car key is stamped L&S and there are several railroads which used these symbols in the past. None is a well-known common line. The Lexington & Southern is one, Lehigh & Susquehanna and Lackwanna and Susquehanna are two others. If anyone has a better ID on this let me know!
Caboose keys are far rarer than switch lock keys and the majority of them are not stamped with the railroad name. Keys from old or unusual lines can be very expensive. They have a rather unique size and shape (very long) and were made by a number of manufacturers who usually did not stamp their name on them, except for Adlake.
This large-top variety is 4" long and has a solid stem ending in a dull point. One side is stamped "L & S" and the other says "3-15", which may be a date (March, 1915 ??). It shows some pocket wear. The key is solid brass and heavy- weighing 1.5 ounces!
CONDITION-Excellent. The key has not been cleaned and has original old dark patina on it. It shows slight usage wear but has no bends, or nicks.
I am offering several other marked and unmarked Caboose keys. If you buy several items from me I can combine shipping charges to save money- Ruby Lane cannot automatically do this, so wait until you get a combined invoice from me before paying.