Here is a lot of three different Marx O gauge 3/16ths scale freightcars from just prior to WWII.  They are all equipped with 8 stamped metal wheels on metal axles in the standard 3/16ths style truck frames with the separate metal overlays, and they have metal tilt style couplers on them.  You get a 254000 Baltimore & Ohio gray gondola with white lettering and black details and interior.  You get a 256 Niacet Chemicals Corp. silver single dome tankcar with red lettering and a black frame.  And you get a 92812 Reading red caboose with white lettering and black details.  The caboose is the earliest version where they were still stamping in the little holes on one end of the sides where they had thought of putting tiny lanterns and lighting these cars!  To my knowledge they never actually sold any lighted ones, but I have seen some nice examples over the years using parts from a shot passenger coach.  All of the coupler springs are present and all of the couplers function normally.  The cars have moderate signs of playwear and some areas of corrosion/paint loss (heaviest on the caboose), but they're perfect for the operators or customizers out there!  Photos from all 6 sides, with a yardstick in the pics for size reference.  Priced to sell, with only actual USPS Ground Advantage or Priority Mail shipping on the 1 3/4 pound package charged to the winner!