Prototype: Four different type four-axle express train passenger cars in fictitious paint schemes for the K.Bay.Sts.B. One type ABBü express train passenger car, 1st/2nd class, two type CCü express train passenger cars, 3rd class, and a type PPü express train baggage car. In a greenish blue basic paint scheme as the cars looked fictitiously. The cars look as they did around 1912.