Help - Austria Franz Josef 1890 On Thin Transparent Paper?

The "Bible" for pre-1918 Austria are the Ferchenbauer catalogues
ie. Österreich 1850-1918 Handbuch und Spezialkatalog, by Dr. Ulrich Ferchenbauer.
newest edition I believe was 2008 and will cost you around $500USD.

Some say that the Michel Austria Specialized Catalog is the best Austria catalogue.

I can't compare since I only buy the Austria Netto Katalog
which includes essays, rocket post, first flight covers, Christmas cancels,
Balloon post etc not found in other catalogues.
Plus ANK lists a lot of varieties, many of which are illustrated.

The ANK does have a few drawbacks though. They have never listed
engravers or designers whereas Michel used to years ago.

Also ANK hasn't been clued in yet I guess that the Austrian State Printer no longer
has recess engraving nor photogravure presses.
The catalogue still list some stamps printed in 2014 as RaTdr./StTdr
which is the abbreviation for Photogravure/Steel recess engraved
and was the combination printing process used for 50 years
Instead it should say offset/etchArt.

There is no excuse for errors like that IMO.

Litho - Thanks for your comprehensive feedback.
btw - I do not think too many others would have detected the mistake on printing-tech - I wouldn't anyway. You're the expert on that field!