Yamada Denzaburo 傳三郎

Yamamasa 山正 is the brand of Yamada Denzaburo. The mark is easy to recognise: two mountains 山山 above the character 正. On many blades the 正 is partly ground away by generations of sharpening.

Yamamasa blades often carry the guarantee word 請合 and grade marks such as 上 and 頂. On some pieces 登録 is written from right to left, as 録登.

Life dates and the place of the workshop are not documented in any source we have found.

Marks and words found on Yamamasa blades:
山正 ・ Yamamasa ・ the brand
山山 ・ yama-yama ・ the double-mountain mark
正 ・ masa ・ second part of the brand name
請合 ・ ukeai ・ guaranteed
登録 ・ tōroku ・ registered
登録商標 ・ tōroku shōhyō ・ registered trademark
上 ・ jō ・ top grade
頂 ・ itadaki ・ top