Please excuse me writing in English. For some time I have been trying to establish the former identity of 56 80 31-95 005-4 ABimdz 556.6, which is now with Railpool and probably at Talbot, Aachen.
I have established that the car was built in 1969, and so I can offer the following two possibilities:
51 80 84-95 050-1 NRH, + 2007
51 80 84-95 075-8 TS, + 200x
I'm inclined to go with 050-1 as other ex-NRH cars were hired to ÖBB around 2009. I do not know when 075-8 was actually withdrawn. If anyone can offer a definitive answer on the former number it would be very much appreciated :-)