Steam locomotive & quot; Prussian State Railways & quot; - Railway brand individually mint never hinged

An express train of the Deutsche Reichsbahn is shown individually on this stamp. These steam locomotives of the Prussian State Railways were able to reach speeds of up to 100 km / h. Steam locomotives were the first self-propelled, machine-driven rail vehicles and dominated rail-rail traffic from its inception until the middle of the 20th century. Brand Individual, mint never hinged.
The Prussian State Railways are those railway companies that were owned or under the administration of the State of Prussia. There was no independent railway administration, rather the individual railway companies were each subject to the supervision of the Ministry of Trade and Industry, later by the separate Ministry of Public Works.