Austrian 7.5h stamp c. 1922

Widmer, it is an Austrian postage due stamp. Look in the Scott catalog after the main Austria listings. It is Scott Austria #J107(1922).

The section after the main postage listings in Scott is affectionately (or disaffectionately, depending on your perspective) called BOB (for Back of Book, Back of the Book). Some other major catalog publishers will put airmail stamps and/or semipostal stamps in with the main postage listings. Scott doesn't.

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P.S. -- a lot of us use scanners. But when IDing a stamp the scanner is only really necessary if there is some minute detail in the design or paper that requires an evenly focused high resolution picture of a flat stamp.

When trying to figure out things like perforation measurements from a camera pic, it can be difficult if the stamp is at an angle or not flat.