I spent a week at Wilderswil (first station out of Interlaken Ost on the BOB) during a family holidy in 1960. We travelled nearly every day in the trains hauled by these railcars in this (Swiss) chocolate and cream livery, to Lauterbrunnen, and to Grindelwald on the on up to the Jungfrau. We also used the rack railway from Wilderswil up to Schynige Platte. Beautiful country and happy memories. Thank you for posting this.