NihontoWatchTechnically registered as a wakizashi, this is a sunnobi tanto – a long tanto just nudging past one shaku (30.3cm) in cutting edge. The blade is in hirazukuri (flat) shape and carries a koshi-bi groove alongside double goma-bashi – the paired parallel grooves associated with Buddhist ritual – and a finely carved Sanskrit bonji character for spiritual protection. The overall shape is elegant and restrained, with a shallow sori and a three-sided mitsumune spine that roots this blade firmly in the Yamashiro tradition. Nobuyoshi’s real name was Takai Kinzaburo, and he worked within the highly regarded Mishina school in Yamashiro (Kyoto) during the mid-1600s. He first signed using the clan name Fujiwara and later changed to Minamoto. Dated works place his active period from the Shoho era (1644-1648), and the NTHK-NPO certificate dates this blade to the Meireki era (1655-1658). A chu-josaku smith rated wazamono for the keenness of his blades, Nobuyoshi produced work of consistent quality, and this tanto demonstrates exactly why that reputation was earned. The nagare-hada flows with dense, quiet energy beneath a lively gunome-midare hamon that oscillates between large and small waves, with long ashi reaching to the cutting edge and sweeping sunagashi harmonising beautifully with the grain. The Edo period koshirae is a remarkable ensemble, its nature theme running consistently across every fitting. The iron tsuba depicts the famous Kami-iso no Torii gate standing in the sea off the Oarai coast in Ibaraki, waves lapping its base in relief with gold-inlaid sea grasses. A shibu-ichi fuchi-kashira by the Nara school of Edo presents nightingale and plum blossom on a chirimen ground, authenticated by the NTHK-NPO. The menuki take the form of nasu (eggplants), invoking the auspicious hatsuyume dream tradition of the early Edo period. A kozuka with matching bird-and-plum decoration is mounted in the brown-lacquer saya, and the kojiri end-cap carries a masterfully carved pine branch over a flowing stream. The niju habaki is gold-wrapped over copper with a kiri straight file pattern. Rare to find a tanto koshirae where the thematic unity holds from tsuba to kojiri – this one does.
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Yamashiro · around 1644-1648
Fujishiro Chu-jo saku · Tōken Taikan top 49%
3 pieces on the market now
The Edo period (1615 to 1868)
Under the Tokugawa peace the daishō became a regulated uniform, and demand gathered in the castle towns, above all Edo itself. The craft split two ways: brilliant display work for connoisseurs, and tested blades whose cutting results were sometimes inlaid in gold.
This work carries older NBTHK “Kichō”-era papers, which the NBTHK no longer issues and largely disavows today. To confirm the attribution, submission to an official Japanese examination body (such as the NBTHK or NTHK) for modern certification could be considered.
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