In 1847, the first swiss railway (completly in Switzerland) was inaugurated between Zürich and Baden (23 kilometer), built by the Schweizerische Nordbahn (SNB). Soon it was nicknamed "Spanisch-Brötli-Bahn". The railway was operated with 4 locomotives (2 of type D 1/3 and 2 of type D 2/4), built by the Maschinenbau-Gesellschaft Karlsruhe of Emil Kessler. This # 1 "Limmat" is a replica of the very first locomotive, built in 1947 by the SLM and the SBB workshop in Zürich, using some parts of the locomotive "Speiser". The iconic locomotive is standing on the turntable of the roundhouse in the Bahnpark Brugg AG on the occasion of the open doors day.