Elsässische Maschinenbau-Gesellschaft Grafenstaden

After the merger of the two factories in 1872 a common works numbering system was introduced, beginning with the number 2118, because Köchlin had built 1,412 locomotives to that point and Grafenstaden 705 locomotives. The manufacture of steam engines ended with locomotive works number 8174. Because eleven works numbers were not used, the combined company SACM must have built 6,042 steam locomotives.

The diesel engines built from 1951 to 1965 were given their own numbers starting from 10001 and 20001. These locomotives were supplied to the Saar Railway amongst others, that later ended up in the Deutsche Bundesbahn. In the 10,000 range, mainly engines with a B-dh axle arrangement, the works number 10199 was reached. Of the 20,000 series, with a C-dh axle arrangement, only 23 engines were made.