Does anyone have information on whether MTH ever marketed a 6-car freight set for Illinois Central? I recently purchased two cars which are tagged as prototypes and the tag curiously says "6-car Frt Set I.C." The cars available were a black IC gondola #294953 and a Main Line of Mid-America IC brown cushioned box car #24823. On the reverse of the tag is also says 3058 B and 3058 C.
Would be curious whether anyone knows of a set actually appearing in a catalog, and whether you might have any of the other cars available and willing to sell?
Thanks