Baltimore Ohio B&O Railroad RR Brass Switch Key FS Hardware Employee Number

Baltimore & Ohio Co Railroad FS Hardware Switch Key Authentic vintage railroad key made of brass. Hollow barrel. It is marked with an B&O Co RR and FS in a diamond shape on the reverse. It has an S for switch and an employee number which is 42?82. You can see wear and nicks on the metal as would be expected but good condition. Please see pictures for details. Please note that color may vary a small amount because of my lighting. If you have questions please ask and I would be happy to help! -Michelle