細節
A BIZEN KOZORI OR OMIYA KATANA
NAMBOKUCHO PERIOD, SECOND HALF 14TH CENTURY
Configuration (sugata): with longitudinal ridge line (shinogi-zukuri), shallow peaked back (iori-mune) and long medium point (chu-kissaki); length (nagasa): 2 shaku, 3 sun, 5 bu (71.4cm.); curvature (sori): koshi-zori of 2.2cm.; increase in width of blade (fumbari): 0.8 cm.; carving (horimono): kaku-dome bo-hi ni tsure-hi on either side.
Forging pattern (jihada): strong wood grain (itame).
Tempering pattern (hamon): florid and extremely small irregular clove patterns (choji midare) in ko-nie.
Point (boshi): ko-midar-komi.
Tang (nakago). Shape (keitai): the machi probably has been moved (machi-okuri) about 3.5cm., therefore probably ubu, wide and with a soft, brown patina; file marks (yasurime): slanted (katte-sagari); end (nakagojiri): ha-agari kuri-jiri; holes (mekugi-ana): two; signature (mei): unsigned (mumei).
Shirasaya.
Accompanied by a tokubetsu kicho token certificate (giving the blade to Toshimitsu), no. 372053, Showa 54 (1979); and a koshu tokubetsu kicho token certificate (giving the blade to Kozori), no. 19581, Showa 55 (1980), issued by the N.B.T.H.K.
Silk storage bag.