Is anyone familiar with this?

I recently managed to get ahold of The first Berlin Semi-Postals in great shape. This now completes my Berlin collection - both regular series & semi-postals. On the back, in the lower right bottom corner is a very light, small, and discreet stamp of the above-noted mark.

I assume this is to signify (by some "expert") that these stamps are legit.

Thoughts?

Many thanks, Dave.

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HockeyNut

15 Feb 2022
07:11:05am

re: SCHLEGEL BPP - Expertization Mark?

Just a heads-up :

There are 3 different experts with the name SCHLEGEL.

1) Hans-Georg SCHLEGEL


2) Andreas SCHLEGEL


3) Hans-Dieter SCHLEGEL



Can you make a picture of the back of the stamp where the expert sign is shown?

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re: SCHLEGEL BPP - Expertization Mark?

Ok I am Jealous !!! Still missng 8 stamps to complete mine and those 3 are among them!

When are you leaving home again with the back door open???

 
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