Here is a Marx O gauge long (10 inches not counting couplers) #5545 CB&Q maroon flatcar with white lettering.  It has 8 diecast metal wheels on metal axles, and has type F trucks with the later style plastic overlays on the sides.  Plastic tilt style couplers on both ends (with springs, working fine).  The original load for this car is a black plastic Erie bridge girder with white lettering, and the Erie name on BOTH sides of the girder (the ones that have Erie on one side only are usually just taken off of a Marx girder bridge and not originals, although I never say never with Marx!).  The plastic coated wire tiedowns to hold the load in place are reproduction parts.  Nice addition to somone's Marx collection out there!  Photos show the car and the girder from all 6 sides, with a yardstick in the shots for size reference.  Priced to sell, with only actual USPS Ground Advantage or Priority Mail shipping cost charged to the winner!