For freight traffic on the Reichenbach-Oberheinsdorf line, one of only two metre-gauge lines in Saxony, the Saxon State Railways got three Fairlie locomotives in 1902 which they designated I M. They had two two-axle bogies with a two-cylinder compound engine each, which were fed by two separated fireboxes in the middle of the boiler. The roof spanned the whole length of the locomotive. Since the tracks were located on the street in many places, the running gear was covered.

When taken over by the Reichsbahn in the twenties, the locomotives were numbered 99 161 to 99 163. Soon the roofs over the boiler barrel were removed. In World War II, 99 163 was shipped to Crimea, but the ship was sunken on its way. The remaining two were retired in 1963. 99 162 was preserved and on static display at Dresden between 1971 and 1974. Previously, the roof had been restored to its original form. Today it can be found at Oberheinsdorf, a former station on the line where it once operated.