Morihei Nakayama Jizuya Natural Stone Koppa (No.M951) Kiridashi Date of manufacture: 1960 -

Date of manufacture: 1960 - 1970

Size: 196 x 74 x 35mm

Total Length: 423mm

Handle to Tip Length: 179mm

modelling each of his knives on the image of his master’s forge

Morihei Nakayama Jizuya Natural Stone Koppa (No.M951) Kiridashi Date of manufacture: 1960 -Makes hazzy finish on Jigane, very typical Nakayama, good stone, good for Kannna, Chisel. Detailed Spec Brand: Morihei Product Type: Natural Stone Size: Koppa Producing Area: Kyoto Japan Mine: Nakayama Hardness (5 = Very Hard): 5 Grain Scale (5 = Very Fine): 5 Sharpening Speed (5 = Very Fast): 5 Soaking Requirement: Not required Size: 162 x 80 x 19mm Weight: 351g Reviewed by Morihei Update: 5 30, 2026