RhB : 23401 works passenger special
Seen on Instagram from rhb_lokfuehrer :
Or search #gmf44 if you have an Instagram account.
Special train from Landquart to Thusis on 9th June and forward to Bergün on 10th to transport the rescued Misoxer BDe 491 to its new home in the Albula rail museum. The train also carried guests; the post reporting this as a unique event for a Schalke Gmf4/4ii.
Report in DE here (but rhb_lokfuehrer has 10 much better photos): https://www.google.ch/amp/s/www.suedostschweiz.ch/tourismus/2021-06-10/eine-jungfernfahrt-im-hohen-alter%3famp
And in EN from club1889 :