Prototypes: German Federal Railroad (DB) "City-Bahn" type Bnrzb 778.1 commuter car, 2nd class (car number 50 80 22-34 180-6), "City-Bahn" type ABnrzb 772.1 commuter car, 1st/2nd class (car number 50 80 31-34 013-8), and "City-Bahn" type BDnrzf 784 commuter cab control car, 2nd class (car number 50 80 82-34 295-9).
Models: Era IV. The cars have the new, longer length. The cars have underbody details specific to the different cars. The trucks have disk brakes. The cars are ready for installation of the 66719 lighting kit and the Märklin 73409 marker light kit at the end of the train with a corridor connection. The cab control car has triple headlights that change over to dual red marker lights; these lights will work in analog and digital operation. The cab control car has maintenance-free, warm white LEDs. This car also has a friction switch for changing the headlights / marker lights over. The minimum radius for operation is 356 mm / 14-3/16". The cars have NEM coupler pockets with close coupler guide mechanisms. All of the cars come individually packaged in a master package. Length over the buffers for each car 282 mm / 11-1/8".
City-Bahn. Branch lines have always been problem children for the German railroad. In 1984, the German Federal Railroad took a new approach to increase the attractiveness of service on little used routes. The project went under the name "City-Bahn" and initially one route for selected for this service: Cologne – Gummersbach. "Silberlinge" / "Silver Coins" commuter cars were used as rolling stock and were rebuilt to the latest standard at that time. A train café was set up in one of the cars and the exterior of these trains was borrowed from the paint scheme for the S-Bahn in the Rhine/Ruhr area. The paint scheme for the locomotives was adapted to that of the trains in order to achieve a high level of recognition for the "City-Bahn" product. Class 218 diesels were used on the route Cologne – Gummersbach. The railroad was able to register a clear increase in passengers thanks to the "City-Bahn", and this increase was the result of the dense service at regular intervals. Without a doubt the "City-Bahn" concept kept rail service alive on routes threatened with abandonment until it was replaced by its successor, the "Stadt-Express" or "City Express".
This model can be found in an AC version in the Märklin H0 assortment under item no. 43808.