I was testing a jnat that seems so far to be a prefinisher, shave could have been smoother. So I decided to finish the test razor on this koppa. Class A razor finisher. It has that perfect for me hardness, hard but not too hard, nice feedback, finish on thin slurry and get a perfect 3 pass shave. There was a remnant of a Hatanaka stamp on the face of the stone that is still sort of visible despite 400 Atoma lapping and using a 1200 Atoma to raise slurry for testing. Don't know if the stamp is real or not (it wasn't mentioned by the seller and the price wasn't a hatanaka price) but I do know that this little rock delivers.

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