S-TRVF 50 74 2173 006-4, B2 5571 of Trafikverket, used by Vy in train 95 Narvik to Luleå. It seems like in Sweden the "internal number" doesn't have anything to do with the UIC number. The original number series was 5521 to 5542 and 5546 to 5575.
Narvik, 2023-07-29.

tobias b köhler