About these sheet-watermarks on 1867 issue an interesting article (I don`t know if pictures will be displayed ....)
http://www.austriaphilatelicsociety...7_issue.html Quote:
never saw someone doing what your doing
These stamps have minimal CV and I have hundreds, so I have to do something with them

. I`ve tried to sold bundles on
ebay (100-200 5 kr, 3 kr with decent, readable cancellation, carefully checked for minor faults) for pennies, but noone wanted them. Then I offered about 8 (3&5 kr) with wmks, all in very good condition (no missing perf, tear, thin etc). I got 1.75 for them

.
On the 1883 issue (as far as I know) the `ZEITUNGS-MARKEN` (`newspaper stamps`) wmk occured accidentally, stamps with full Z,T,U,G and S letters are rare. Till now I found none...The only upside down wmk I found till now is the last one, but I don`t think it`s rare (the Austria Netto Katalog doesn`t mention it would add any value)