T10 Carbon Steel Katana with Hamon, Gold Chrysanthemum Tsuba - Black Koshirae

The blade on this katana is forged from T10 carbon steel and clay tempered to produce a clearly defined hamon running the length of the nagasa. The differential hardening process leaves the edge hardened for retention while keeping the spine more flexible - resulting in the characteristic misty temper line visible in the bottom-right detail shot. At 40.55 inches overall and 2.8 lb, the proportions sit firmly in full-size katana territory.

The tsuka is built on a full-tang core, meaning the steel extends continuously from tip to pommel with no joint. Real white samegawa - the traditional ray skin underlayer - wraps the wooden handle before the black cotton ito cord is applied in a classic diamond pattern. Gold-tone menuki hardware punctuates each exposed samegawa window, adding contrast against the black wrap.

The tsuba is cast copper finished in gold gilding, shaped as a rounded form with a raised chrysanthemum design across the face. As seen in the close-up image, the petals are rendered with fine relief detail and framed by a rope-pattern border - a design that reads clearly as koshirae style. The fuchi and kashira carry matching dark and gold tones that unify the fitting set. This sword is part of our Bamboo Tsuba Katana collection if you prefer an alternate guard motif.

The saya is shaped from hardwood and finished in black lacquer with a slightly textured surface that catches light differently than a flat gloss finish. A black sageo cord is knotted through the kurigata in a traditional wrap, functional as a retention cord and visually consistent with the all-black saya and handle palette.

At 1.259 inches wide and 0.275 inches thick at the spine, this is a proportionally standard katana built for display and collection. The black-and-gold color combination - lacquered saya, black ito, gold tsuba - gives it a formal, classical Japanese aesthetic. Browse the full Replica Katana collection to compare blade materials and koshirae configurations.