This item seems to have been a "pass the parcel" object! It started at the central post office, receiving a WIEN 1/1 cancel at 9:20am and a directional '85' which is Gaudensdorf at III Schönbrunner Haupstrasse. The address is X Marx-Meidlingerstrasse, up the hill - so a routing to Gaudensdorf looks reasonable. On the back is a Gaudensdorf cancel timed at 9:45am. However it was then sent on a tour of the Bezirk X Sudbahnhof-Favoriten area, being cancelled at Wien 76 Sudbahnhof at 11:20, Wien 74 Favoriten also at 11:20, and Wien 76 Staatsbahnhof at 11:30. Hopefully it was then delivered!