The Automobile Car No. 6424 has five different variations and was available from 1956 until 1959. It came with two of the premium automobiles that were colored either RED, TURQUOISE, WHITE or YELLOW. The major variation has the number to either the left or the right of the "LIONEL" inscription on the side. Other variations have to do the mold that was used either 6424-11 Die 1B, 6424-11 Die 2, or 6424-11 Die 3 (the only rare variation). Early issues had bar-end trucks with tabbed couplers, while the later versions had early AAR trucks with disc couplers.