Thread: Water hone for penknives ect.

I ran across this beautiful stone at a antique store today. I would like if someone could positively identify it as a thuringian. This is the first hone I have ever HAD with a label saying 'made in Germany'
I am wanting to use it as a baseline when comparing to other flea market finds,







This is just a comparison to some of my other stones. None of which I have 100% identified.
The stone on the inside right, is on a paddle with a leather strop on the other side, it has German writing saying 'extra fine waterstone". The inside left is unmarked but just as fine as the other two. The outside left stone, could just be a slate stone. The slurry looks good but it's not very fine. Maybe 3000-4000 grit...