Three cogwheel steamtrains side by side in Rigi Staffel on the occasion of the 150 years anniversary event of the Rigi Bahnen. From left to right: H 2/3 # 16, built by SLM in 1923 for the Vitznau-Rigi-Bahn (VRB). H 1/2 # 7, built by SLM in 1873 for the Rigibahn, part of the collection of the Swiss Museum of Transport Lucerne and loaned to the Rigi Bahnen from 2021 to 2023. Only operational cogwheel steamlocomotive with upright boiler and first built locomotive of the SLM works. On the right H 2/3 # 17, built in 1925 by SLM Winterthur for the Vitznau-Rigi-Bahn (VRB).
