Can you help me ID a RR by its initials?

Does the wrench appear new or old?  I found FN and Winston Salem Southbound Railroad  (FN is Foxville & Northern Railroad) but it appears to be a paper railroad created in 2018.

Thanks for that tidbit, lionelflyer!  Old.  Quite old, but it's hard to judge such things past a certain point.

Picture of the lettering?

I looked up the initials in a 1945 Official Guide of the Railways--a listing of the railroads and timetables of basically every railroad in existence in America, Canada, Mexico and Cuba at the time--and came up completely empty.

Were these letters actually stamped into the metal, or were they caste when the metal was poured?

If stamped, then perhaps an old mechanic who worked on lots of different railroad lines over his lifetime stamped all of the different lines onto his wrench as a keepsake.

Mannrock

The letters are stamped.

Posting a pic may be possible, but the wrench is owned by a tech-challenged friend of mine, and I'll have to arrange a visit to get it.

I appreciate that effort, Steve!

Mannyrock, you may be on to something!

I too took a look at the reference materials I have and came up empty. This one's a mystery.

Well, RR is a common abbreviation for "RailRoad" and RY is a common abbreviation for "RailwaY". But I've never seen "RRY" used in a railroad name to mean either one.

I wonder if the stamping - or at least part of it - has to do with the company that made the tool - like "Rogers, Roberts and Young Co." or something like that?

Thanks for the efforts and the suggestions, gentlemen!  I like the idea that part or all of it might be the manufacturer.

I haven't seen RRY, either, but I have seen other kinds of errors in the use of standard abbreviations, and something like that might be involved.

All very intriguing and maybe not clearly explainable.