After the payments as a result of the lost First World War, 358 locomotives of Prussian Class T 11 were still included in the official renumbering plan of the DRG. These were reclassified as 74.0-3 and were allocated the serial numbers 001 – 358. They were used throughout the territory of the former Preußische Staatsbahn – for the traditional suburban services and in mixed service on secondary lines. To counteract the lack of powerful passenger train locomotives after the end of the war, a total of 35 engines were converted to superheated steam from 1923 onwards and were fitted with Schmidt-type smoke tube superheaters.

On trial runs, 74 046 achieved a coal saving of up to 37 % compared with their saturated steam sister 74 003. The converted locomotives initially ran regularly again on the urban railway in Berlin. Only with the increasing electrification of the urban railway network were many of the Berlin T 11 moved to shunting service on the numerous nearby freight train depots in Berlin. Further converted T 11s were allocated to RBD Oldenburg – and they are also known to have been used at Bw Stralsund, which belonged at that time to RBD Stettin. When the „small“ unit locomotives were put into service from the 1930s onwards and due to the decrease in traffic caused by the global economic crisis, it was increasingly possible to dispense with the T 11s and many of the older engines were decommissioned. At the end of 1935 there were still 158 T 11s in the fleet of the DRG. This figure was increased again by the classification of 48 locomotives which had to be handed over to Poland as a result of the First World War and were now regarded as „German“ and reclaimed. The engines used as Oki 1 at the PKP were reallocated numbers of decommissioned T 11s. Belgium and France also had to „hire out“ their loco-motives received as reparations to the DRB from 1940 onwards. Up to 1945 the fleet was reduced as a result of these events and of war losses to just over 100. Most of the locomotives remaining at the Deutsche Bundesbahn were decommissioned on 14.08.1950 – this administrative act involved 61 locomotives. Three „latecomers“ followed in March and December 1951 and this concluded the history of the T 11 in West Germany.

In the territory of the subsequent DR-Ost, there were 68 T 11s in 1945. In 1950 there were still 51 in stock, but only 26 of these were in the operational fleet. Up to 1960 this number decreased to 18 locomotives, many were already hired out to „VEBs“ or „Kombinate“ as factory or heating locomotives and often sold to them after they were removed from the DR fleet. The last operational engine was the 74 231 of the Bw Gotha – it was decommissioned on 25 October and sold to the Industriebahn Erfurt on 25 January 1965. It survived all periods and can be seen in service again today in its green Prussian livery as T 11 „7512 Hannover“ at the heritage railway Minden.

Delivery date: 3. Quarter 2009