T10 Carbon Steel Katana with Hand-Painted Black Floral Saya - Gold Koi Tsuba

The blade on this katana is forged from T10 carbon steel and carries a genuine hamon line along its length - that subtle, wave-like boundary is the result of differential heat treatment that leaves the edge harder than the spine. The chrome-polished surface catches light cleanly, and the hand-finished edge profile shows the kind of careful grinding that separates a precision piece from a shelf replica.

The tsuka is built over a full hardwood core wrapped first in real white samegawa - genuine rayskin whose pebbly texture provides natural grip - then bound tightly in black cord in the classic diamond-over-samegawa pattern. Gold-tone kashira fittings cap both ends of the handle, creating a sharp black-and-gold color story that carries through every fitting on the sword. Explore our Real Zoro Katana collection for more koshirae-style pieces built with the same attention to handle construction.

The tsuba is one of the most striking details on this build. Cast in gold-tone metal, it features a raised koi fish surrounded by dense floral and botanical relief work - peony blooms, flowing water, and layered foliage fill every quadrant. The sculpted depth gives it a three-dimensional quality that reads well even at arm's length, and the warm gold tone bridges the black handle wrap and the lacquered saya without visual interruption.

The saya is crafted from hardwood and finished in a deep black lacquer base, then hand-painted with a full floral vine composition: white lily blossoms, green branching leaves, and orange accent flowers trail along the scabbard's length. A pair of small butterflies in blue and red appear near the kojiri. The koiguchi and kojiri are fitted with real horn, and a teal sageo cord is tied in a traditional knot at the mouth of the saya - its deep green tone plays directly off the botanical palette of the painted design.

At 40.55 inches overall, 1.259 inches at the blade's widest point, and 2.8 lb, this katana presents with the heft and proportion expected of a full koshirae replica. The complete package - T10 steel blade with visible hamon, hand-painted black saya, gold koi tsuba, black cord handle, and teal sageo - makes it a natural centerpiece for a collector's wall display or a standalone conversation piece.