The RS-1 was introduced by ALCO in March of 1941 with the delivery of the first of two units to the Rock Island. Combining the accessibility of a switching locomotive and the higher-speed tracking of a road unit, the RS-1 started a revolution in locomotive design that was soon embraced by all of the major diesel-electric builders. Despite ALCO's own introduction of higher horsepower roadswitchers, the 1,000 h.p. RS-1 had a production span of 19 years (1941-1960) with 623 units.

Features: * Golden White LEDs * Separately-applied wire grab irons, coupler cut bars, trainline hoses and lift rings * Accurate painting and printing * AccuMate? couplers * Realistic die-cast mainframe * Five-pole skewed armature motor with dual-flywheels for optimum performance at all speeds * Directional lighting Note: Undecorated version comes with both friction bearing and roller bearing truck sideframes