Tenkū Tanto (天空) – Heavenly Sky

Tenkū (天空): the heavenly sky

Tenkū denotes the sky in all its immensity, the celestial vault arching above the world. In Japanese culture, the sky is the realm of celestial bodies, the elements and dragons, and a symbol of imperial power: the emperor was regarded as a descendant of the sun goddess.

This tantō gathers all of those symbols in one object: the moon, a lightning bolt and a dragon on the tsuba; a coiled dragon on the fuchi; the sun and the chrysanthemum on the kashira. The immaculate white of the saya and the tsuka evokes the purity of the sky, while the gold speaks of light itself.

A straight mirror-polished manganese steel blade

The blade is forged from manganese steel, a robust alloy steel. Its straight profile is a refined silhouette that recalls the earliest tantō and ancient blades of Japan.

A mirror polish allows the surface to reflect light like still water. There is no hamon and no bo-hi (a clean, uninterrupted line from base to tip).

Gilded fittings bearing symbols of the sky

The gilded copper tsuba takes the form of a rounded cross, engraved with the moon, a lightning bolt and a dragon. The gilded copper fuchi bears a coiled dragon, and the gilded copper kashira is engraved with a motif evoking the sun and the chrysanthemum, accompanied by emblems recalling the sky and the emperor.

The tsuka is built on a wooden core covered with ivory-white faux rayskin, wrapped in a diamond-pattern white tsuka-ito, beneath which golden dragon menuki catch the light. The habaki in gilded brass is engraved and brushed.

An immaculate white lacquered saya

The saya is crafted from hardwood and finished in an immaculate white lacquer, entirely unadorned. The koiguchi and kojiri are equally white, and the white sageo carries that purity the full length of the piece. This clean, unbroken ground sets off the gold of the fittings as sunlight sets off an open sky.

Dimensions and handling

With a 33 cm blade and an overall length of 55 cm, Tenkū is a generously proportioned tantō. Its 17 cm tsuka sits firmly in one hand, while a weight of 0.7 kg keeps it effortlessly light. At 57 cm in its saya, it presents beautifully on a stand, where the white and gold draw the eye with quiet authority.