Yes, that was one of the 2 (or 3?) rakes of old wooden coaches kept for excursion use. They were all, as far as I know, ofswr origin - mostly corridor but a few non-corridor.
Several survive - the DCDR's 837, now restored and in use; 1287, which is the staff room on the DCDR but not operational, and I think 1142 and 1097 may have come from that source too.
I never travelled in them, but I certainly remember the black noisy diesels, and the noisy exhausts of the AEC, BUT and MED railcars!
For years I thought that I had imagined seeing a big blue steam loco until I saw a colour slide of 171 about 10 years later and borrowed a copy of Colin Boockocks irish Railway Album from the library complete with several photos of 207.
Ours was firmly a car and bus family, my first train ride was around 69 or 70 in a compartment coach with wooden paneling behind a black noisy diesel from Killiney to Tara Street.
That’s 207, and UTA AEC railcar sets, no doubt! Mine are of UG class locos, Jeeps and wooden carriages with a strong smell of damp in them (Lisburn, Portadown and Great Victoria Street), and big black diesels and AEC cars in Westland Row....
I am an early to mid 80s' man up to Mk 3 era so am really interested.
Haven't ordered yet as was waiting to decide what to do so I will definitely buy 2 plough in CIE finish.
Likewise with the Tara's I have held off. Not so much by the colour but by the roof.