The Lionel Hudson Type 4-6-4-Locomotive No. 2055 introduced in 1953 and would continue to be available until 1955. Based on a Santa Fe prototype, this engine was equipped with Magnetraction, smoke, drive rod connecting rod valve gear, and there was a whistle in the tender. This locomotive is identical to the No. 685 except for the number change. It shares the same boiler casting with the O gauge No. 665 and the O27 Gauge No. 2065.
There are two variations:
Variation A: Rubber-stamped number on boiler sides, with a No. 6026W or No. 2046W tender that have bar-end trucks with a magnetic coupler. Produced in 1953.
Variation B: Heat-stamped number on boiler sides, with a No. 6026W tender that has bar-end trucks with one magnetic coupler. Produced in 1954 and 1955.
This locomotive shares that same trailing truck, that has plastic sides, with the No. 2065. It will operate well on both O27 Gauge and O Gauge track.