30cm Hon-yaki Fugu Hiki Knife, Gassan Kuniyuki "Saigo-gyōbutsu" - Crafted to be quite thin. Normally, one would have a professional sharpen the groove to thin it out several times, but this knife is perfect and has no warping. A masterpiece from over 30 years ago, its simplicity is elegant. It is said that over the long years, the steel's molecules stabilize, resulting in a sharper blade (from the TV program "NHK Professional").