Today, first of july, the unique cogwheel steamlocomotive with upright boiler, H 1/2 # 7, can celebrate the 150th birthday. So it has no duty today. But on Pentecost, she was pushing two cars up the mountain from Arth Goldau to Rigi Kulm, here between Wölfertschen-First and Rigi Staffel. The locomotive was built by the SLM in Winterthur in the year 1873 for the Rigi Bahn from Vitznau to the Rigi, and was the very first locomotive built by the new founded SLM. The locomotive was more or less a copy of the locomotives # 1 to # 6 of the Rigi Bahn, which were delivered by the workshop of the Schweizerische Centralbahn (SCB) in Olten in 1871 and designed by Niklaus Riggenbach, which built the Rigi Bahn.
