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Reads on the stone top from the upper right down, JUN SHOSHIN HONYAMA (pure specially
chosen original mountain) which is a registered trade name,

And at the middle SAIKOKYUHIN (very best quality)

And 23 (an inventory or grading number)

Marked faintly on the end of the stone in a rectangle KA SHO HON
YAMA * (Maruka correct true original mountain).

This Nakayama Maruka awasedo toishi stone is NEW/OLD stock from a closed store in
Japan. It has not been used other than to test the quality at one edge of the stone as you can
see in the photos.

This is a very hard stone and it requires advanced sharpening skills to use. The change in
color indicates it is from the edge of the strata. These very hard stones are more easily used if
a diamond nagura (DN) plate is used before hand to build up a slurry.