T10 Carbon Steel Katana with Clay-Tempered Blade, Wave Tsuba in Dark Blue & Black-Gold Saya

The blade of this katana is forged from T10 carbon steel and put through a clay-tempering process that produces a genuine hamon - the flowing temper line visible along the edge that results from differential hardening between the edge and spine. The surface carries hand-finished wave engraving that traces the blade's natural curvature, adding a layer of visual depth rarely seen at this tier of craftsmanship. At 40.55 inches overall with a 1.258-inch width and 2.8 lb weight, the proportions stay true to classical katana geometry.

The tsuka (handle) is built on a full-tang core with real white samegawa - genuine rayskin - providing grip texture before the dark blue ito cord is applied in a traditional diamond wrap pattern. The ivory-toned samegawa diamonds visible between each wrap section create a high-contrast detail that reads clearly even at a distance. A amber-toned menuki is secured beneath the wrapping, adding a subtle decorative element rooted in period koshirae tradition.

The tsuba is cast from copper in a wave theme, finished in a warm gold tone with intricate relief carving across both faces. Wave motifs in Japanese sword fittings traditionally evoke endurance and the cyclic nature of force - an appropriate pairing for a blade with this level of surface work. If you're drawn to this style of fittings, the broader range of Real Copper Tsuba Japanese Samurai Swords offers additional variations on this aesthetic.

The saya is where this katana makes its most immediate impression. Hardwood construction is finished with a piano lacquer coat, then hand-painted in a multi-color gradient that shifts from deep black at the koiguchi and kojiri through teal and into gold along the midsection. The result is a scabbard that catches light differently depending on angle - not a printed pattern, but a hand-applied composition unique to each piece. Dark blue sageo cord is knotted at the kurikata, matching the tsuka wrap and pulling the full color scheme into a coherent palette.

This katana is finished in full koshirae style - all fittings assembled and matched for a cohesive presentation. The combination of clay-tempered T10 steel, hand-painted hardwood saya, and a detailed copper wave tsuba makes it a strong centerpiece for collectors focused on both blade quality and visual presentation. Note: sword stand is not included.