The first class of steam locomotive to be designated the D II by the Royal Bavarian State Railways (Königlich Bayerische Staatsbahn) comprised small tank locomotives with two coupled axles.
The original D II was the smallest standard gauge locomotive ever owned by the Bavarian State Railway.
It was based on a design by Krauss which was delivered in numerous variants for different purposes to stations and construction firms.
The D II was used in the early 1870s on the Vizinalbahn lines from Siegelsdorf to Langenzenn, Immenstadt to Sonthofen and Georgensgmünd to Spalt.
An excellent 1:10 model of BÄR is displayed in the Nuremberg Transport Museum.