Here is another Marx Toys O gauge plastic freight car.  This is a dark blue Erie #51170 drop end gondola with white lettering.  The car is equipped with 8 stamped metal wheels on metal axles, has the more common stamped steel truck side frames and has tilt plastic coupler on both ends (yes, they function fine, have their springs).  The car is in [pretty good shape, with some light surface rust on the wheels that you'll need to clean up, and the two plastic drop ends are both missing (they do make reproductions, though).  Good operator, customizer, or restorer car.  Photos show the gondola from all 6 sides with a penny in most of the shots for size reference.  Priced to sell, with only actual USPS Ground Advantage or Priority shipping charged to the winner!