SP B-50-15 Wood Framed 40' BoxcarThese are N scale 3D printed models of the Southern Pacific B 50 15 a wooden single sheathed boxcar built in 1925, representing one of the SP's classic wood framed freight car classes from the transition era between wooden and all steel construction. A Folsom Locomotive Works model. Available in eight decal variants tracing the B 50 15 through its complete service and second career history. The SP B 50 15 was built in 1925 as part of the Southern