I am not an authority on pocket watches. Value depends largely on whether it has a gold case or a gold filled case. A 15-jewel watch is not officially a "railroad" watch. I think Elgin was probably playing off the railroad theme. Also, I would guess that a 15 jewel is probably gold filled. If the inside of the cased is marked "warranted" it is most likely gold filled. I think a 20 year case is 10k goldfilled and a 25 year case is 14k gold filled. You did not mention the size or if it is open face or a hunting case watch. What I have seen sell in antique malls is $100-200 if gold filled, $300-500 if solid gold. Hope this helps. Perhaps someone with more information will respond. Larry
Probably a serial number
The phone number of the Railswest Railroad Museum And Ho Model Railroad is: 712-323-5182.
Example sentence - The machine had a serial number engraved on it.
The phone number of the Reading Railroad Bookmobile is: 336-373-2580.
it is engraved below the drivers seat
The phone number of the Colfax Railroad Museum is: 715-962-2076.
The phone number of the Bowie Railroad Buildings is: 301-805-4616.
The phone number of the Southern Michigan Railroad is: 517-423-7230.
The phone number of the Muskegon Railroad Historical is: 231-726-3657.
The phone number of the Mccomb Railroad Museum is: 601-684-2291.
The phone number of the Nebraska Railroad Museum is: 402-727-0615.
The phone number of the Chatham Railroad Museum is: 217-483-7792.