The Allis-Chalmers Car No. 6519 was available from 1958 until 1961 and has three variations that have to do with the color of the car. From DARK ORANGE (A), to ORANGE (B), to a DULL ORANGE (C), these differences show the inconsistency in the color of the plastic that was used at the Lionel factory during these years. Often the wires and the brake wheels are found broken or missing on this car. It came with AAR trucks and disc couplers, and had BLUE heat stamped lettering.