Kannaba Japanese Hand Made Plane Blade by Tokyo Yamamasa - 70mm

Brand name: Yamamasa (山正)

Smith name:  Unknown

Steel: Carbon Steel

Jigane(Iron part of the blade): Kamaji

Blade width: 70mm

Blade total length: 95mm

Blade thickness: The blade near the bevel(about 4.30mm)，Top of Blade（about 6.20mm）

Weight: 214g

Blade Angles: about 16°

Accessories：-

Additional Information:  This blade comes from a retired carpenter in the Kanto region.

Information regarding the Tokyo Yamamasa brand is scarce. However, based on my recent research, it appears they were a Tokyo-based wholesaler that specialized in high-quality tools for craftsmen working with Paulownia (Kiri) wood—such as makers of Kiri-tansu (traditional chests) and Geta (wooden sandals).

Notably, the renowned Tokyo plane blacksmith Mr. Yuzawa (Brother of the second generation Masayoshi) is known to have supplied blades for this brand.