With a photo report by Dr. Ulrich Ferchenbauer
AUSTRIA, 1851
Special Catalog 2008, No. 6 Type IIIb, light blue + No. 6 IIIb, blue, both unused
The left stamp has slightly worn original gum without a hinge, while the right stamp has more yellowish-toned gum with noticeable traces of adhesion. The right stamp is missing the two typical dots in the letter "G" of "ZEITUNGS" (as indicated by arrows), but all other features of Type IIIb are present.
The left stamp has narrow margins at the top and left, while the other stamp has broad to overhanging margins on all sides. For both stamps, the complete margin lines of the adjacent stamps are visible.
Both stamps are visually impactful; an interesting comparison! Without signature!