A-BuB 51 81 89-80 005-6, this one seems to be of the series AB4üh 21520 to 21529 built 1957 by SGP. Following a series of couchette cars these were the first seating cars of the standard length 26.4 m. ÖBB replaced the original bogies SGP 53 by MD 36 with disk brakes, B & B rebuilt it from a compartment car to a dining car. In a special train of Brenner & Brenner to Wien-Heiligenstadt on 2026-01-06. Photo taken before departure at Mürzzuschlag. tobias b köhler