Oldenburg G 7

The steam locomotives of Class G 7 of the Grand Duchy of Oldenburg railway was built after the model of the Prussian G 7. The boiler 2.820 mm higher than the top of the rail was in a metal frame and had a diameter of 1.660 mm. The vehicles were equipped with a simple control of the type Heusinger and a Lentz- valve control.

From the Reichsbahn 13 specimens were taken and classified by the numbers 6201-55 55 6213 in the range 55.62. 1925, the machines were converted to superheated steam. At the same time, the locomotives were equipped with air brakes and increased the speed limit to 60 km / hr.