Felbermayr staff car A-FELB 63 81 9929 001-3. This looks like it's from the couchette car series Bc4üh 31660 to 31681 of 1954 to 1956 by SGP Simmering for ÖBB, later used for RoLa (rolling highway) trains. Used in the transport of a heavyweight generator rotor. Graz Hbf, 2025-02-22.