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check this one out. it is on classified.
Stefan is the seller .

Escher - Straight Razor Place Classifieds

Jimmy older ones is similar to this label. they don't reach the edges.
Specially if you check droeschers Many of them looks like this stone.
if you check this stone you will see there is more label...

just stone has been cut half. that is why seems like unusual.
When i saw at first i got confused too.