Through the History of Märklin Catalog Title Pages.
The painting adorning this car shows the legendary class 01 before the background of a massive mountain as the locomotive enters a tunnel with an express train. Next to the locomotive is probably the most typical railroad signal – the semaphore signal. It shows Hp 1, i.e. "Proceed".
Prototype: Privately owned type Ibopqs refrigerator car with the title page of the Märklin catalog from 1930.