They were based on a prototype from Württemberg. They were fitted with an American bogie and had a high outer firebox instead of the second steam dome. As a result, the boiler was also pitched higher.
These locomotives were over 50 years old when they were retired around 1922 by the Deutsche Reichsbahn before being given a new classification.
Näbrich, Fritz; Preuß, Reiner; Meyer, Günter (1984). Lokomotiven sächsischer Eisenbahnen, Schnellzug- und Personenzuglokomotiven (EFA 2.1) (in German). Düsseldorf: Alba. pp. 121–122, 207. ISBN 3-87094-096-4.
Spielhoff, Lothar (1990). Länderbahn-Dampf-Lokomotiven. Band 1: Preußen, Mecklenburg, Oldenburg, Sachsen und Elsaß-Lothringen (in German). Stuttgart: Franckh'sche Verlagshandlung. ISBN 3-440-06145-0.