This is the 1946 model that has the smoke bulb and "Lionel Atomic Precision Motor". It runs, smokes and operates great. The 2020W tender whistles fine, there is a small crack that has been glued in the tender shell at one front corner. Both have normal play wear and are graded in excellent minus condition.

Features:

6-8-6 model of Pennsylvania Railroad S2 steam turbine, black painted die-cast body without E-unit slot, flat outer surface on the turbine housing, silver rubber stamped cab number, wire handrails, thick nickel rims on all drivers, side rod only, horizontally mounted motor with brushplate marked "Lionel Atomic Precision Motor" with two female receptacles for E-unit jack, 3-position E-unit with jack that plugs into the brushplate (one recepticle on brusplate locks the E-unit into forward, neutral or reverse, while the other jack activates the E-unit for sequential, transformer controlled forward-neutral-reverse operation), lighted with prism lens, smoke with early smoke bulb unit.The 2020W tender features a motorized whistle, plastic shell, magnetic coil operated rear coupler, wire handrails, metal wheels & axles, metal chassis.