Lionel O 6-17734 X31A Round Roof Box Car, Pennsylvania #76644 Lionel O gauge already assembled X31A round roof box car features die-cast metal sprung trucks and operating couplers, hidden uncoupling tabs, die-cast metal frame, separately applied metal un
In the early 1930s, Pennsylvania developed a new round roof style of boxcar that allowed for a taller 10" inner height and increased overall loading volume. The largest number of them were class X31A boxcars, identified most clearly by a distinctive non-flush inset where the car sides met the rounded roof.
By 1937, the efficient round roof design of PRR was adopted by the ARA and used on other railroads including Seaboard and Norfolk & Western. The newly-tooled, 1:48 scale boxcar is accurately made to match the original Pennsylvania X31A design. A great boxcar for both steam and diesel eras.