Brand: Tanaka Toishi 田中砥石工業所
Producing Area: Kyoto - Japan
Mine: Unknown. Kouzaki?
Dimensions: 225mm x 78mm x 68mm
Highest grade (Maruhatsu). Mined ~1940's by Michiaki Tanaka.
Vintage "Top Grade" Aoto which have become somewhat of a unicorn these days as they become more and more rare. These vintage specimens are harder, finer, and less muddy than most of what are being sold today. Super fast, fine, consistent, and big. Mid stage polishing or refined toothy edges.