Quote:All the sheets I see on
ebay are different
Probably because the ones you've seen on
ebay portray the definitive stamps (Michel Generalgouvernement 71 - 88) issued in 1941
like this 1.20 Zloty (Michel 87)
engraved one:

or this (Michel 85) 80 Groschen
Photogravure example

whereas your sheet (Michel Generalgouvernement 91) is part of the semipostal set issued in 1942 for Hitler's 53 Birthday.
The Michel Deutschland I have does not list any quantities for these nor for any other Third Reich issues but the print runs must have been huge since most of these stamps are basically worth nothing.
Does the Michel Specialized show quantities?