Hundertwasser stamps Austria stamps Stamp Links Info wanted Wants - list Reactions

Please take a look at these items and give your opinion:

Newspaper wraps with inprinted stamps, pre-cancelled:

These are not listed in "Ferchenbauer" catalogue. Are these private issues?
Past WWII cover:

Cancellation: 9/1 WIEN 66 - - 6c
Was it allowed to use those stamps together?
Arnie Berkers, 30-01-2000