Sleeping-car UH 4601 (51 66 06-51 021-7) in CIWL colours in the train "Chopin" Wien - Warszawa. This was the last sleeping-car with a "66" CIWL number in regular service. From 1993 on WARS took over the sleeping-car operation in this train. At least one UH continued to be operated under an ÖBB number. Wien Südbahnhof, 1988-03-19. Photo: Roland Beier, Wien.