The PER DIEM SERIES.  In the 1970's a surge of colorful box cars could be seen all across the country as larger railroads leased more and more box cars from shortline railroads.  To encourage the return of the box cars, shortline railroads could charge a per diem, or daily fee, until the cars were returned.  Incentive Per Diem (IPD) box cars were primarily 50' Rib Side box cars with 10' sliding or plug doors or sometimes double sliding doors.

This series features a colorful assortment of twelve new paint schemes of Per Diem box cars from various shortline railroads.