Deutsche Reichs-Post 9 Kreuzer PFenninger

Hello all Stamp masters,

I have a question on a stamp I saw for sale that got me wondering.
I read online that Franz Pfenninger is a reputable Stamp Expert.
Stamps that bear his signature usually sell for a premium.

But the following stamp has a problem: The "Pfenninger" signature stamp on the back was probably overinked and has "bled through" to the front, making it look almost like a cancellation on an otherwise mint Stamp.

Does this affect the value? Or is it irrelevant since this is ffrom Pfenninger?

If I was looking for this stamp for my collection, I would pass on that example. To me, it's damaged.

Robert

Fake signature. This "signature" reads from bottom to top; a genuine signature would read from top to bottom.

@Germania
Interesting take!
Are these examples specific to Pfenninger?

@Germania
This site (https://briefmarken-pruefer.de/de/b...-lassen.html )
says that the standardization of placing signatures was introduced during Heinrich Köhlers time.
Are you sure Pfenninger was not before Köhler?
I also read that Pfenninger himself never used the "BPP" ending because it was introduced shortly before he passed.

Fake signature.The genuine letters are tall and slim. Stamp is now worthless
https://briefmarken-pruefer.de/de/1...nninger.html

@perf12
Good resource, thanks!