Prototype: Royal Bavarian State Railroad (K.Bay.Sts.B.) type ABBü four-axle express train passenger car, 1st/2nd class. Train route from Munich via Augsburg and Ulm to Stuttgart. The car looks as it did around 1908.
The K.Bay.Sts.B. Bavarian class S 2/6 can be used as motive power for this car. It can be found under item number 37015.