Operating Era: 1918-1970. A Flat Casting version of our 3300 series USRA SS Box Car, Original version (3300-3320). This version is Undecorated. Now comes with new One-Piece Roof Frame. Kit now comes with etched bronze corner sill steps and Carmer cut levers. PLEASE NOTE: The One Piece Body Version of the 3300 Series is being redone and is Unavailable at this time. However, the FLAT KIT Version (3390 and 3391) are still available as are the decals. Note that the Flat Kit ONLY covers Kits 3300 through 3320. PLEASE SEE ALSO OUR #7200 SERIES FOR AN ADDTIONAL USRA SS BOX CAR KIT. The United States Railway Administration took over the railroads in December 1917. Standard freight car designs were developed to ease the car shortage. 25,000 single sheathed cars were built between 1918 and 1920 and assigned to 26 roads. Too late for the war, they served as a standard for a decade. All USRA SS kits now contain one piece body castings and both K and AB brakes. Railroads covered include: GET, Jersey Central, C&O, C&NW, NYC, PRR, SP, B&O, D&H, Reading, MILW, MC, PMcK&Y, GR&I, NYP&N, Erie, N&W, Clinchfield, RF&P, WM, AA, MC, and CPR (Kit 7201). Also available in a Flat Kit (3391). Please specify which road name decal is desired.