Higonokami folding knife
A higonokami is a type of folding pocket knife originating in Miki, Hyōgo Prefecture, Japan in 1896. The knife has no locking system, but is a friction folder or “penny knife”, using the friction of the swivel or the pressure of the user’s thumb on its iconic lever or chikiri, to prevent the knife from folding during use. The handle of the Higonokami is made of a folded over sheet of metal. The handle is stamped with the name of the maker of the knife and the steel used in the blade. A distinguishing feature is that the blade has a flat grind without a secondary bevel.