All of these cars came with AAR trucks. Why Lionel issued every one of these cars in an ORANGE picture box that always has the number "6464-735" printed on the ends is a mystery.
It gets even more confusing because in the last year of Post War production, in 1969, Lionel re-issued the BLACK painted No. 6464-425. However, because years earlier the heat stamp had been changed to "6464-725" this was the number that was printed on the sides of this box car. It was identified in the 1969 catalog as a Type IIa No. 6464-425, and this number is also reflected in the text of the catalog. However, it used the same Type IV body mold as the earlier variations, but was equipped with bar-end trucks. To further complicate identification of this car, it was issued in a Hagerstown checkerboard box that is numbered "6464-425!"