Coach 1./2. Cl. DB III

With new car number

AB4yslwe 1st/2nd class DB Ep. III apron express passenger cars.

These distinctive passenger cars originated from two prototype cars developed by Linke-Hoffmann-Busch in 1939 that were based on the well-known DRG "Schürzen" express train cars. They also had streamlined side skirts and covered car ends. Unlike the express train cars, the entrances at the ends of the cars were set back and each had two revolving doors for faster passenger changes. After the war, both the DB and the DR had this type of car in their fleets. In 1978, the DB still had three cars in service, now designated Bye670, and one AByse633. The DR retired the last cars of this type in 1981. Only three of these apron-type express train cars have been preserved as museum vehicles for the traditional train of the Nuremberg Transportation Museum.