Vintage Lima Shovels brass watch fob

Brass watch fob, round, with a loop at the top and a white tag tied through it. Front shows "LIMA" with a raised excavator and a map of the Americas, plus "MOVE THE EARTH WITH A LIMA" around the edge. Back reads "LIMA SHOVELS DRAGLINES CLAMSHELLS CRANES" with "Baldwin-Lima-Hamilton Corporation Construction Equipment Division" below. Likely a promotional piece from the Lima construction equipment maker, probably mid-20th century. Shows patina and wear on the raised lettering; no major dents visible. Please check: exact age, whether it has the original fob chain or ring, and any damage not visible in photos.