This is a nice pair of Marx O gauge plastic 8 wheel freight cars.  There is a #18326 jade green Penn Central cabose, and a #347100 red Pennsylvania gondola, both in really nice shape and complete.  They both come on the Type G stamped side frame type trucks used on much of the Marx 8 wheel, and have the 8 stamped metal wheels on metal axles, and plastic tilt couplers on both ends.   Photos show the cars from all 6 sides, with a yardstick in the shots for size reference (they are O gauge, run on Marx 3 rail train track, which is pretty much the same size as Lionel O-27).  Priced to sell, with only actual USPS Ground Advantage or Priority shipping cost charged to the winner!