This is a "family heirloom" knife, confirmed by Fujiwara Teruyasu Hamono Kogei. Knife Manufacturer: Fujiwara Teruyasu Hamono Kogei Blade Material: Aogami Super Steel ● Blade Length: Approximately 210mm ● Overall Length: Approximately 335mm ● Blade Width: Approximately 44.2mm ● Blade Thickness: Approximately 2.5mm ● Weight: Approximately 196g ● Accessories: Box ● Handle polished Manufacturer's Suggested Retail Price: ¥90,200 This item has been sharpened by the manufacturer (Fujiwara Teruyasu Hamono Kogei). Please enjoy the sharpness as if it were new. Everything in the images is included. Please purchase only if you understand that this is a used item. Instant purchase is welcome without comments. The Gyuto (chef's knife) and "family heirloom" knife are made by sandwiching stainless steel and the highest grade steel (Aogami Super), and the surface is finished with a hammered pattern. The steel (Aogami Super) is commonly referred to as Aogami, meaning blue steel. It is an alloy made by adding tungsten and chromium to high-purity Shirogami (white paper steel), and is the highest grade steel developed for knives. Aogami has toughness and wear resistance, and is characterized by fewer chipping and dulling issues compared to Shirogami. Aogami Super is the name of the steel material. It is a steel (hagane) for kitchen knives manufactured by Hitachi Metals.