You are bidding on a circa 1950s to 60s era, not sure, an old kit built, Mantua marked metal, card stock over metal tank, AH Mathiel & Company SHPX 6040 tank car in the pictures. 5 inches long. Good shape, lots of general paint wear, maybe weathered on the top and sides, nicks and chips, some light metal rusting, could use some cleaning or use as shown. Zoom in for details.