This is the Maruyoshi Bonten HD, which is made by Ryusen for Maruyoshi and is also sold as the Hattori HD.
The only difference with this blade and the Hattori, is the name engraved on the blade.
The core is VG10 with 62 layers of nickel damascus stainless steel. The Rockwell hardness of these knives is 61+ HRC and the blade is hand engraved.
Handles are black Pakkawood with 3 stainless rivets.
As with many Japanese knives this year, there is a considerable wait for production, but all knives below are in stock.
Ryusen - Hattori - Maruyoshi VG10
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Fine Japanese chef's knives to Australia since 2007