Since, after the formation of the DRG, it had been established that in particular the vehicle fleet of the south-west German Reichsbahn directorate was heavily overaged, many coaches were handed over to that directorate. In this way, 2500 Prussian compartment coaches came to the south-west and about 1000 to Saxony by 1929. After the abolition of the 3rd class, the previous so-called heavy-hand-luggage coaches ("Traglastenwagen") of the master drawing editions were additionally equipped with seat benches according to drawing Ib 11. After the modification, they were all classified as C3u Pr 04/30 - a particularity that was actually atypical and makes the identification of the original type of construction more difficult. The younger ones could still be identified by the pressed-sheet axle guards and the steps instead of the ladder at the car's end wall. Despite the procurement of new standardized coaches ("Einheitswagen"), the DRG could not do without the compartment coaches for the time being. In 1935, over 7000 C3 Pr 11 coaches were counted, and around 4000 C3tr pr 13 coaches around 3000 of which were meanwhile running without heavy-handluggage compartment.
