HSB Diesel Locomotive 199 006 (Type V 10 C) The state owned VEB Locomotive "Karl Marx" (LKM) in Potsdam-Babelsberg built the class Ns 4 narrow gauge diesel locomotives in the Fifties as a further development of the army field railroad type HF 130 C. A 90 horsepower motor provided the necessary drive power and transmitted power to the three wheelset by means of a four-speed gear train, jackshafts, and coupling rods. At LKM as a result came the type V 10 C narrow gauge diesel locomotive from the type Ns 4. A 100 horsepower motor from the state owned VEB Diesel Motor Works Schönebeck and a modern external look were the most striking characteristics of these units, which were produced for gauges between 600 and 1,000 millimeters / 24 and 36 inches in about 500 units. Only a few units here went immediately to the German State Railroad (DR). After abandonment of the Spreewald Railroad (1,000 mm / 36"), a leftover piece of the military air base in the Cottbus city limits had to be serviced with a tank car (aviation fuel) loaded on a roller trailer und switching work had to be done on the meter gauge Cottbus Streetcar system. On September 25, 1969, the DR bought for this purpose two type V 10 C locomotives built in 1964 from the state owned VEB Impregnation and Particleboard Factory Gotha. They were put on the roster as Kö 7001 and 7002 (starting July 1, 1970: 100 905 and 906, starting August 15, 1973: 199 005 and 006). In February of 1983, the connecting track to the air base was changed to standard gauge. Both diesel locomotives were used at the end for the dismantling trains. Then they were moved to the Harzquer and Brocken Railroad, where they arrived on March 26, 1983 in Wernigerode. In the Harz region, these small diesel locomotives earned their daily keep with switching work in the stations of Gernrode, Nordhausen, and Wernigerode. With the discontinuation of narrow gauge freight service on April 1, 1990, these tasks were largely done away with. The DR therefore finally put both small locomotives into storage on April 10, 1991 and retired them soon thereafter. In the new classification plan of 1992 they were carried on the books a little while longer as road numbers 399 112 and 113. On February 1, 1993, they went under their old road numbers to the roster of the now privatized Harz Narrow Gauge Railways, Inc. (HSB). The HSB had them stored in North Nordhausen, non-operational diesel locomotives on permanent loan to and in the care of the "IG Harz Narrow Gauge Railways". Road number 199 005 was loaded with a crane on a truck trailer on June 29, 2018 and a day later reached the "IG Spreewald Railroad" its old home on permanent loan from the HSB, the Spree Forest in Straupitz. After an external restoration, this locomotive is to become the showpiece on the museum grounds of the association.