Here's a WalthersMainline boxcar perfect for 1970s and later HO layouts! In response to a growing shortage of suitable boxcars, railroads big and small began updating and expanding with fleets of larger 50' American Car & Foundry Exterior Post Plate B Boxcars. Introduced in 1971, these earlier versions of the car featured the popular Dreadnaught end, and would remain in general freight service for years afterward. Layout-ready and built tough, these models feature: One time run of these roadnumbers, order now - limited quantity available! Prototypes seen from coast-to-coast 1971 to the present Handles all types of general freight loading Used by dozens of railroads Dreadnaught ends Stanray diagonal panel roof Correct Plate B d .