There is a number of fine knife shops here in downtown Tokyo, many within walking distance of my workplace. I have been eyeing some new arrival hones at one of the shops and decided to pick one up the other day.
What I got is labeled "Mikawa Toishi". It is a hone sized peice of 'Nagura'. The stock that the store had wasn't labeled as to which 'type' of nagura they are, and one or two of them looked to have some flaws if you looked really close.
I got the largest one without any appearant flaws and here is a few pics of it brand new.
A beautiful stone with a beautiful patterning. The top right kanji read Mikawa Toishi. The lower left ones read Naka Shima (internal stripes). And the number 80 is the size designation of the hone.
The bottom was quite flat, so I decided to lap it instead of the stamped side. After some quick preliminary testing (I'm not sure yet) I think it may be in the #5000+ range. I will have to do a couple of more tests than what I did the other night, but the shave off of it only pulled a little. I will investigate further.
I had my hones out the other night for a honing session and decided to also take a picture of my current line up of natural hones. I have this Mikawa Toishi, a Belgian Coticule, a 'Thuringian' (Escher-type), and a Renge Suita. All beautiful hones in their own right. The only hone with a wet surface is the Mikawa.