The Lionel Baltimore & Ohio F-3 No. 2368 was produced on a BLUE plastic shell and painted WHITE, BLACK, with YELLOW stripes and heat-stamped lettering in 1956. Reproduction shells have silk-screened application of these colors. The chassis is BLACK, as are the truck side frames and the front pilot skirt on the A Unit.

This engine has louvered roof vents, filled in portholes, cast in side ladders, magnetic disc coupler on the front end of the A unit. All other couplers are solid and non-operating. This diesel was equipped with a horn that was operated by a D Cell battery, and a three position directional unit whose control lever was adjustable from underneath the chassis. The dual vertical worm drive motors powered each axle that utilized Magnetraction. There is one variation:

Variation B: The A Unit was produced on a GRAY body and painted BLUE. No B Unit exists that matches.

All of the Lionel F-3s are designed to work on the larger radius of O gauge track. When used with O27 track this diesel will scrape the switch machine housing on No. 1122 O27 switches when passing through the curved turnout. Evidence of scrapes on the fuel tank of these diesels is a sure indication of operation on O27 track.