Based on GN 56050-56248 rebuilt in 1957 from USRA DS boxcars originally constructed in 1919 and 1923. However the red paint represents a 1960s paint scheme. For a 1957 date, you should purchase the "data only" mineral red car and add the GN name and number, Champ decals HC-645.

This car was used as the basis for UP S-40-10 at the 2009 Shake-N-Take Clinic at Cocoa Beach and that project can be seek at the Shake-N-Take website as well as in the RMC March, 2010.