You are bidding on an older HO Scale, maybe 1970s era, AHM Tempo Made in Yugoslavia marked, Western Maryland 82 F DF-15 diesel locomotive in the pictures. 7 3/4 inches long. Good shape with a decent amount of general body wear from use, wear to the handrails, missing a coupler, could use a cleaning and maybe maintenance, untested and sold for parts or repair.  Zoom in for details.