Prototype: Two German State Railroad Company (DRG) 4-axle mail and baggage cars, Prussian designs. 1 type Pw4pr04 car with a roof cupola. 1 type Post4b17 car with a brakeman's cab.

Model: The car frames have truss rods and underbody details. The steps, ladders, and grab irons are separately applied . Total length 171 mm / 6-3/4".