SP B-50-16 Steel Sheathed 40' BoxcarA Folsom Locomotive Works product, fulfilled directly by Folsom Locomotive Works an exceptional N scale 3D printed model of the Southern Pacific B 50 16 Steel Sheathed 40 Boxcar, representing the car as rebuilt in the late 1930s when the SP re sheathed the original 1927 wood sheathed carbody in steel. Available in three decal variants: SP Express Service, SP Prewar Overnight Service, and SP Postwar Overnight Service. The B 50 16 began its life in 1927