 They stayed one of the six large French locomotive constructors until the merger with Elsässische Maschinenbau-Gesellschaft Grafenstaden in 1872, when the company became Société Alsacienne de Constructions Mécaniques.André Koechlin was mayor of Mulhouse from 1830 until 1843, and was elected a deputy in 1830, 1831, 1841 and 1846.He became a Knight in the Legion of Honour in 1836.