The Grand Duchy of Mecklenburg Friedrich-Franz Railway grouped various 2-4-0 steam locomotives built between 1849 and 1856 into its Class II.
These differed, however, from the engines supplied at the same time which were later categorized as the Class I. Locomotives BERLIN, BÜTZOW, WARNOW, MAGDEBURG and STRELITZ were given operating numbers 7, 8, 11, 12 and 15.
Soon after entering service it became apparent that, when hauling goods trains between Schwerin and Rostock, the locomotives were reaching the limit of their capability.
The engines worked the lines between Schwerin and Rostock and Bützow and Güstrow.
The vertical boiler had a raised firebox cover and a safety valve.