Skip to product information
Mirror-polished stainless tuna knife with ebony handle and triple silver rings
1/8
Slide 1 of 8

Yoshihiro Ginsan Mirror Polished Stain Resistant Steel Maguro Bocho Tuna Knife with Triple Silver Ring Ebony Handle (Sakimaru Takobiki Style) *Blade Length 17.7"

SKU:

GISTMI450TSVEHMS
$3,999.99
Sale price  $3,999.99 Regular price 
Blade Length 17.7" (450mm)
62-63 HRC
Yes
Free Magnolia Saya Cover Included

Blade Hardness

HRC (Rockwell Hardness) measures how hard the blade's steel is. Kitchen knife steel typically falls in the high-50s to mid-60s on this scale. Harder steel is built to hold a fine edge over long use, while softer steel favors flexibility and easy resharpening. The right HRC depends on the steel and design, not a single higher-is-better number.

Stain Resistant

This steel resists rust and staining from moisture and acidic foods, making it easy to maintain with routine care.

Saya Cover

This knife comes with its saya cover included at no additional cost, shaped to its exact blade for the same custom fit customers pay extra for on other knives.

Full Specifications

Blade

Knife Type
Maguro Bocho (Tuna Knife)
Primary Use
Filleting & butchery (fish, poultry, meat)
Blade Metal
Ginsan (Silver 3) Steel
Grade
Ginsan-ko
Construction
Mono-Steel
Blade Hardness
62-63 HRC
Blade Edge Type
Single Bevel
Blade Finish
Mirror
Stain Resistant
Yes

Handle

Handle Material
Ebony
Handle Shape
Octagonal
Bolster Material
Silver Ring Water Buffalo Horn (Color Varies)
Tang Type
Partial Tang
Product Details

Enjoy the superior edge retention and sharpness of a high carbon knife without the apprehension of discoloration or rust. This next-generation steel, made possible by recent advancements in metallurgy, was developed to perform in high-paced, high-demand workplaces without the hassle of oxidation. Ginsan blends traditional methods of knife making with modern metallurgy, representing a breakthrough in the incorporation of high carbon steel and stain-resistant metallic elements. With a hardness on the Rockwell scale of 62-63, Ginsan offers a rare combination of traditional Japanese high carbon knives with stainless steel properties. Hongasumi translates as true mist and refers to the beautiful mist-like patterns on the blade that are formed when Ginsan is forged with iron. Ginsan steel is forged by our master artisans to create traditional Japanese knives of the highest quality that provide peace of mind in high-paced environments.

The Maguro bocho tuna knife is an extremely long knife highly specialized to fillet tuna and other large fish in a single cut. This knife is commonly found in Japanese fish markets such as Tsukiji Market, where it is often seen used to fillet tuna. This Maguro bocho represents the highest level of traditional Japanese craftsmanship and is an extremely special collectible piece, truly one-of-a-kind for two main reasons. This knife uses a material that's extremely rare for a Maguro bocho and boasts an exemplary level of finishing rarely seen for a knife of this length. Our Yoshihiro Ginsan Maguro Bocho is extremely rare and perfectly finished in comparison to a standard Maguro bocho. A standard Maguro bocho typically has a rougher finish with imperfections along the blade and may not have a straight blade due to the difficulty of sharpening and achieving an extremely sharp edge.

A custom-matched protective wooden sheath called a Saya is included, which protects the knife and enhances its appearance when not in use.

Care & Origin
Country of Origin
Japan
Care Instructions
Hand wash only.
Dry immediately.
Avoid the dishwasher.
Sharpening Method
Sharpen by hand using whetstones. Do not use honing rods.

Related items