Morihei Natsuya Natural Stone (No.136) need to dig lines before use. Or you can use it as Hazuya finger stone. Mined around 1960's by Michiaki

Mined around 1960's by Michiaki Tanaka

Edge Length: 67mm

Producing Area: Tokyo/ Japan

making re-sharpening and the entire blade portion have been hand polished on natural stones to bring out the folded layers

Heihachi’s workshop room and corridor were always filled with knives waiting to be sharpened

Morihei Natsuya Natural Stone (No.136) need to dig lines before use. Or you can use it as Hazuya finger stone. Mined around 1960's by MichiakiWe are no longer producing this item or with the same number. Please understand that showing price, description and specs might be old information. Detailed Spec Brand: Morihei Product Type: Natural Stone Mine: Natsuya Soaking Requirement: Not required Size: 212 x 85 x 62mm Weight: 2624g Update: 5 30, 2026