A KO-BIZEN TACHI

Details
A KO-BIZEN TACHI
HEIAN PERIOD (CIRCA 1100), SIGNED HIROMITSU

Configuration (sugata): with longitudinal ridge line (shinogi-zukuri), shallow peaked back (iori-mune) and small point (ko-kissaki); length (nagasa): 2 shaku, 4 sun, 4 bu (74.2cm.); curvature (sori): strong koshi-zori of 3.1cm.; increase in width of blade (fumbari): 1.3cm.
Forging pattern (jihada): o-mokume.
Tempering pattern (hamon): ko-midare with some 'legs' (ashi) in nioi and ko-nie and with bright kinsuji appearing on both sides.
Point (boshi): small and rounded (ko-maru) with slight turn-back.
Tang (nakago). Shape (keitai): tapering, regular form with strong curve; file marks (yasurime): slanted (katte-sagari); end (nakagojiri): saki kurijiri; holes (mekugi-ana): two (one being a shinobi-ana, a secondary peg hole for additional security); signature (tachimei): Hiromitsu.

Shirasaya with attestation by Sato Kanzan.

Itomaki tachi koshirae, Edo period (18th century) comprising: a nashiji saya decorated with flowering wistaria vines in gold and silver lacquer, the flowers executed in carved mother-of-pearl; a complete set of shakudo nanako mounts emblazoned with gilt jo-mon of the Hamuro family in raised gilt copper; the fuchi inscribed Hiromitsu; the underside of the o-seppa scratched Goto and Mitsuhiro--overall length of koshirae 102cm.; length of tsuka 22.7cm.; tsuba height 7.8cm., width 7.6cm., thickness 8.5cm.

Accompanied by a juyo token certificate issued by the N.B.T.H.K., dated Showa 48 (1973); and a tokubetsu kicho koshirae certificate issued by the N.B.T.H.K., no. 0005, dated Showa 47 (1972).
Provenance
Lord Fairclough
Literature
Juyo token to zufu, vol. 21.
One Hundred Masterpieces (1992), no. 4.

Lot Essay

Little is known about Hiromitsu, but the typical Heian shape of the blade and the Ko-Bizen characteristics (very strong koshi-zori with a straightening of the curve towards the tip of the blade, the extremely small point, the continuing curve of the tang, the deep color of the steel and the profuse nioi) would place it circa 1100 A.D.