The Nordhausen-Wernigerode Railway Company incorporated twelve Mallet locomotives into its fleet as Numbers 11 to 22.

In 1897, shortly after the railway company's foundation, the first of a new batch of locomotives was built for the NWE by Arnold Jung in Jungenthal.

The fleet quickly grew to 12 locos of which nine were made by Jung from 1897 to 1901 and three by the Mecklenburgische Maschinen- und Waggonbau AG in Güstrow in 1897 .

The locomotives were very reliable, but six had to be handed over to the military railways during the World War I (including all three engines built in Güstrow) for use in France, and they never returned from their wartime duties.

As a result, the remaining five Mallets were no longer needed on the Nordhausen–Wernigerode line and were transferred to the Selke Valley Railway which suffered from a shortage of motive power.