NOS EMD locomotive tie bar. I would date this to the 1960's - 1970's as a best guess. As you can see, the locomotive is a four axle GP model.
NOS EMD Electro-Motive GM Locomotive Minneapolis St Louis Railway Age Cover 1958
NOS EMD Electro-Motive GM Locomotive Boston & Maine Railway Age Cover 1958
NOS EMD Electro-Motive GM Locomotive Soo Line Railroad Railway Age Cover 1958
NOS EMD Electro-Motive GM Locomotive Central of Georgia Railway Age Cover 1957
NOS EMD Electro-Motive GM Locomotive Chicago North Western Railway Age Cover '58
NOS EMD Electro-Motive GM Locomotive Norfolk & Western Railway Age Cover 1959