Maschinenbau-Gesellschaft Karlsruhe

The Maschinenbau-Gesellschaft Karlsruhe ('Karlsruhe Engineering Works') was a locomotive and railway wagon manufacturer in the early days of the German railways. It was based at Karlsruhe in what is now the state of Baden-Württemberg in southwestern Germany. The origins of the firm go back to an engineering works founded in Karlsruhe in 1837 by Emil Kessler and Theodor Martiensen. In 1842, the first steam locomotive, Badenia, was delivered to the Baden state railways.
For more information, see Wikipedia.