The Track Maintenance Flat Car No. 6812 was available from 1959 until 1961. Produced on a RED 6511-2 or 6424-11 mold it came with early AAR trucks equipped with disc couplers. This flat car has its WHITE heat-stamped number to the left of the "LIONEL" side inscription. Came with two BLUE men that had FLESH painted faces and hands. The platform would raise and lower with the use of a hand crack located on this platform. The hand crank always matches the color of the platform. There are seven variations:

Variation A: CREAM superstructure and platform parts. Difficult to find.

Variation B: DARK YELLOW superstructure and platform parts.

Variation C: LEMON YELLOW superstructure and platform parts.

Variation D: BLACK superstructure and platform parts.

Variation E: GRAY superstructure and platform parts.

Variation F: BLACK superstructure and GRAY platform and crank handle.

Variation G: GRAY superstructure and BLACK platform and crank handle.

Because the superstructure and the platform pieces are interchangeable they are not associated with either mold used to cast this flat car. The above listed color combinations are the generally accepted configurations that this car is believed to have been issued.