This is a Williams 23001 O Pennsylvania ALCO RS3 Conventional 3-Rail Diesel Loco #8604. Introduced in 1950, the all-purpose, 1600-horsepower RS-3 diesel locomotive had the stamina and strength for freight and passenger service yet was agile enough for yard work. With its rugged, dependable design, it’s no wonder that many of these versatile RS-3 locomotives are still working today on short lines, tourist lines, and freight lines. Our model comes ready to go to work with True Blast Plus™ 16-bit polyphonic sound including prime mover, horn, and bell.Its key features are:Durable ABS plastic shell6-amp reverse boardDirection lock-out switchDual motors with flywheel coasting actionDirectional LED lightin,gSeparately applied grabirons, drop-down steps, and windshield wipersWire-formed handrailsTraction tiresTrue Blast Plus™ 16-bit polyphonic sound including prime mover, horn, and bellLength 14.5; height 4.25'Navigates O-31 curvesCondition: Factory New (C-9)Operational Status: FunctionalOriginal Box: Yes (P-9)Manufacturer: WilliamsModel Number: 23001MSRP: $479.95Scale/Era: O ModernModel Type: Diesel Loco This could make a great addition to your collection railroad layout or gift for a friend