Yes, it's still running today, that's the coal-fired BRB 6, an H 2/3 geared steam locomotive (800 mm)
See:
http://hellertal.startbilder.de/bild/Schweiz~Privatbahnen~BRB+Brienz+Rothornbahn/808508/die-kohle-befeuerte-brb-6-faehrt.html
Best Greetings
Armin
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