Search:

Jim
You are absolutely right, I confussed Yamashiro with Yamato, a prominent Osaka stone consolidator and major abrasives mfg. And I agree, these are the stamps of 330Mate. Sadly I do not actually...

I remember that these stamps showed up not too long ago.

They read at the left down, Yamashiro-mei-do (Yamashiro Co., Made by, toishi/stone.) and to the right Sho-hon-yama- hokakuhin (true,...