South West African Zwillinge
The South West African Zwillinge 0-6-0T of 1898 was a narrow gauge steam locomotive from the German South West Africa era. Between 1898 and 1905, more than fifty pairs of Zwillinge twin 0-6-0T steam locomotives were delivered to the Swakopmund-Windhuk Staatsbahn (Swakopmund-Windhoek State Railway) in German South West Africa.
Source: Wikipedia — South West African Zwillinge (CC BY-SA 4.0)