The Lionel Santa Fe NW-2 Switcher No. 623 was available from 1952 through 1954. Used a BLACK painted NW-2 body with WHITE heat-stamped number on the sides along with a "Santa Fe" decal. The decal is found in different shades of BLUE as this color is particularly prone to fading. Equipped with a three position directional unit whose control lever was adjustable from the bottom of the die-cast chassis, ornamental horn and BLACK bell, radio antenna, marker lenses, interior lighting at both ends, and electronic couplers, this engine was an excellent runner. Magnetraction on two axles. There are two variations:
Variation A: The handrail is attached to the body at ten points. Early production.
Variation B: The handrail is attached to the body at three points. Later production.
Lionel numbered this switcher for use on O Gauge track, but it was never issued in any O gauge sets. It will also operate on the smaller radius curves of O27 Gauge track. Similar to the No. 622 except there is not an operating bell.