T10 Carbon Steel Tanto with Koi-Painted Black Saya and Gold Koi Tsuba - Full Tang

The blade on this tanto is forged from T10 carbon steel and finished to a high-polish chrome surface that lets the hamon line stand out clearly along the edge. Wave engraving runs along the spine, reinforcing the water motif that defines every visual element of this piece. The full-tang construction runs the complete length of the handle for a solid, balanced feel at 1.98 lb total weight.

The tsuka is built over the full tang and wrapped in black ito cord with a diamond pattern, with red samegawa ray skin beneath providing texture contrast. Paired menuki accents sit at the wrap intersections, and the black kashira cap closes the handle cleanly. The grip measures comfortably in hand for a tanto at this 21.6-inch overall length.

The gold-tone tsuba is the visual centerpiece at the guard. Cast in an oval form, it features a relief-carved koi in mid-swim surrounded by cresting waves - the antique gold finish gives it weight and warmth against the dark blade and black ito. A silver habaki sits just above the guard, bridging the transition from handle to blade.

The black hardwood saya is lacquered to a deep gloss and hand-painted with a full koi pond scene. An orange-and-white koi and a gold koi move through green aquatic reeds across the face of the scabbard - the brushwork is detailed enough to read as artwork on its own. A black sageo cord is laced through the kurigata for display or carry. If you appreciate the artistry of the Marble T10 Carbon Steel Tanto line, this koi edition brings the same material quality with a fully realized hand-painted theme.

At 21.6 inches overall with a 1.26-inch blade width and a shipping weight of 3 lb, this tanto fits naturally into a koshirae-style collection. It pairs well with other pieces in the Gold Cord Handle Tanto family for collectors building a cohesive display around gold-accented Japanese short swords.