Full Tang Manganese Steel Katana with Black-Red Blade in Dark Blue Koshirae - Gold Chrysanthemum Tsuba

The blade runs 40.55 inches in manganese steel, heat-treated and tempered to deliver consistent hardness from spine to tip. Its most immediate visual feature is the black-red dual-tone finish - a deep black along the spine that bleeds into rich crimson toward the edge, giving the steel a dramatic gradient that shifts under light. The full tang construction runs the steel continuously through the handle, keeping the 2.8 lb assembly solid and well-balanced. Browse the full Red Wave Theme Blade Japanese Samurai Swords collection for similar dramatic blade colorways.

The tsuka is built over genuine white samegawa - real rayskin with its natural pebbly texture - then wrapped in dark blue cord using a traditional diamond-pattern tsuka-maki. White menuki accent pieces are visible between the wrap diamonds, breaking up the blue with crisp contrast. The gold kashira cap at the pommel ties the handle hardware together into a unified finish.

The tsuba is one of the standout details on this piece. Cast in gold-tone metal, it carries a chrysanthemum and botanical relief design - layered floral motifs with fine carved detail that frame the blade opening. The rectangular seppa and habaki sit flush beneath it, maintaining proper blade alignment while the ornate guard adds visual depth at the crossguard.

The saya is lacquered hardwood in dark navy, finished with a scattered gold and teal speckle pattern that catches light across the entire length. It is not a plain solid color - the fleck texture gives it an almost celestial appearance, like a night sky viewed from a distance. A dark blue sageo cord is tied in a traditional knot at the koiguchi, matching the tsuka ito exactly and completing the coordinated koshirae aesthetic.

Overall dimensions are 40.55 inches in total length, 1.259 inches in blade width, and 0.275 inches at the spine. Shipping weight is 3.3 lb. The coordinated dark blue, gold, and black-red palette across every component - ito, sageo, saya, tsuba, and blade - makes this a cohesive collector piece with strong visual presence whether displayed on a stand or stored in its lacquered scabbard.