Lima ignored the Austrian market for a long time, almost. Based on the Swiss "EW I" coaches Lima brought the same ones in ÖBB colours, too. The real ones looked rather similar to their Swiss counterparts, although there were differences. The amount of windows was different, depending on the classification. As the models were far off being true to scale, this was not a big deal. Almost nobody cared about this in the 70's. Austrian coaches always had tubular rubber bellows (SBB coaches received them in real, too). Lima did not, they hat those old fashioned folded bellows. Those coaches were to high and too short. But, we are talking about toy trains.
9140 ÖBB green with yellow inscriptions, this was the earliest and the rarest of those coaches. First production run around 1974.
9140 ÖBB green with white inscriptions. Very common.
9166 ÖBB "Jaffa paint scheme" red & white. Austrian modellers were dissappointed, the chosen colours were far away from prototype.
9166 ÖBB revised livery (so called "Sparlack") red & cream, not a very big improvement, but a little bit better than the previous one.