I am digging in cabinets never opened and came across these Japanese Wet Stones purchased from Stu some time back, perhaps five years ago. Can any of you enlighten me as to what they are? I know they are 1200, 6000 (with base) and 13000 grit and there is a diamond plate but not anything else. The writing is in Japanese for some reason. Thanks.

Japan Box.jpg Japan Open.jpg