Prototype: German State Railroad Company (DRG) class 18.3 (former Baden IV h) express steam locomotive with a tender. The locomotive looks as it did around 1929/1930.
Model: The locomotive has an mfx digital decoder and extensive sound functions. It also has controlled high-efficiency propulsion with a bell-shaped armature and a flywheel, mounted in the boiler. 3 axles powered. Traction tires. The locomotive and tender are constructed mostly of metal. A 72270 smoke generator can be installed in the locomotive. The dual headlights change over with the direction of travel. They and the smoke generator that can be installed in the locomotive will work in conventional operation and can be controlled digitally. Maintenance-free, warm white LEDs are used for the lighting. There is a close coupling between the locomotive and tender that can be adjusted for the radius of your curved track. There is a close coupler with an NEM pocket and a guide mechanism on the tender. Minimum radius for operation 360 mm / 14-3/16". Protective piston rod sleeves and brake hoses are included. Length over the buffers 26.7 cm / 10-1/2".

One-time series.
 

The units stationed at Offenburg were the flagship express locomotives on the Rhine Valley route and were often seen on the point of the German State Railroad's new deluxe train, the Rheingold. Maffei designed four-cylinder compound running gear for the IV h. The inboard cylinders were positioned way up to the front and gave the locomotive its unmistakable look. The tender also contributed to the characteristic look of the locomotive. It was unusually short with a truck and two axles mounted close to each other in the frame for the tender. 

A set of express passenger cars to go with this locomotive can be found in the Märklin H0 assortment under item number 41929.