Wurttembergische Articulated Locomotives in Germany

Class Tssd / BR 99.63 (Locobase 5068)

Data from "Baureihe 99.63" on Alfred Gieseler, Dampfmaschinen und Lokomotiven website at [], last accessed 21 April 2019; and Four-Cylinder Mallet Compound Locomotive for a Narrow Gauge," The Locomotive Magazine, Voume XI [9] (15 April 1905), p. pp 69,

Unlike many Mallet operators in Germany, Wuertt.St.B found these tank Mallets to be very satisfactory. They fulfilled a requirement for good power on light, curving track on such segements as Marbach-Heilbronn, Biberach-Oechsle, Schussenried-Riedlingen, and Lauffen-Gueglingen.

The engines arrived as follows:

Year Works numbers

1899 3070-3072

1901 3198-3200

1904 3294

1908 3505 (or 3503)

1913 3698

[], source of the data, says these loks served German railroads for decades. They were redesignated 99.631-639 in 1925 by the DRG. Five were scrapped by 1940, but the other 4 served the Deutsche Bahn in the postwar era into the 1950s (638-639 scrapped in 1954, 1956) and 1960s (637, 633 retired in 1965, 1969, but retained as possible museum loks, with 633 operating occasionally until 1992.)