The Lionel Lines Caboose No. 6057 was available from 1959 until 1962 and was again produced in the last year of the Post War period in 1969. The chemically blackened sheet metal chassis is held to a usually unpainted body by tabs, and it came with early AAR trucks and one disc coupler.
Lionel used only one heat-stamped die on these cabooses so the lettering is reversed on each side.
There are three variations:
Variation A: Has a painted RED Die 1A body that has WHITE heat-stamped lettering. The first production of this caboose.