Photo Balkanmodels: April 2001 NES Thessaloniki. Second class carriage 51732080 228-6.
Photo Balkanmodels: April 2001 NES Thessaloniki. Second class carriage 51732080 228-6 from a different angle showing that is a part of a train formation in Line 8.
Photo Balkanmodels: April 2001 NES Thessaloniki. Builder's plate of couchettes carriage 51735980 011-0.
Photo Balkanmodels: April 2001 NES Thessaloniki. Door detail of couchettes carriage 51735980 011-0. This carriage was coupled up to the second class one of the previous two photos in the train formation in Line 8..
the consist above looks like some international train,
Line 8 at NES Thessaloniki has no platform for passengers to get on or off the train. Therefore it was used to park trains for short or long (overnight) periods. It was often occupied by International carriages. Sometimes there were more than a single consist of carriages on this line.