The German Class 23 engines of the Deutsche Reichsbahn (DRG) were standard (Einheitslokomotiven) steam engines that were conceived as a replacement for the Prussian P 8 by the Schichau Works. They were given the same boiler as the Class 50s which were developed in parallel and, like them, the newly developed 2'2' T 26 tender with its front wall that protected train crews during reverse running.