細節
A BIZEN OSAFUNE KATANA
MUROMACHI PERIOD, DATED EISHO 7 (1510), SIGNED BIZEN OSAFUNE SUKESADA, ATTRIBUTED TO HIKONOBEJO SUKESADA
Configuration (sugata): with longitudinal ridge line (shinogi-zukuri), shallow peaked back (iori-mune) and medium point (chu-kissaki); length (nagasa): 2 shaku, 5.5 bu (62.2 cm.); curvature (sori): torii-zori of 2.0 cm.; decrease in width of blade (fumbari): 1.1 cm.; carving (horimono): futatsu-hi on both sides. [The blade is slightly 'tired', but the open grain makes it look more than it actually is; there are a few tiny 'chattermark' type chips on the monouchi hasaki and the ha-machi has been moved up 2 mm. due to a chip.]
Forging pattern (jihada): wood grain (itame) mixed with a strong and slightly open, straight grain (masame)
Tempering pattern (hamon): small irregular configurations (koitame) in extremely bright, sharply defined ko-nie along the edge of the hamon (habuchi); highlighted with 'swept sands' (sunagashi) near the omote ha-machi, and elsewhere with small 'rootlets', both straight and slanted (ko-ashi, saka-ashi) with 'leaves' (yo); on the ura this extends to within 7 cm. of the yokote where it becomes slowly undulating; on the omote it extends to about 20 cm. from the yokote where it becomes more subtle, but with the addition of 'islands' and insinuations of sunagashi for 7 cm. from the yokote.
Point (boshi): irregular (midare-komi) with with no turn-back (yakizume).
Tang (nakago) shape (keitai): Bizen, ubu and with a semi-moist, brown patina; file marks (yasurime): slanted (katte-sagari); end (nakagojiri): rounded (kuri-jiri); holes (mekugi-ana): one; signature (mei), katana-mei: Bizen Osafune Sukesada; date (jidai): Eisho 7-nen 2-gatsu hi (a day in the 2nd month of Eisho 7 [1510]). [Some 'fogginess' and scratching to the surface; some very small nicks on the ha-machi in the monouchi.]
Shirasaya.
MUROMACHI PERIOD, DATED EISHO 7 (1510), SIGNED BIZEN OSAFUNE SUKESADA, ATTRIBUTED TO HIKONOBEJO SUKESADA
Configuration (sugata): with longitudinal ridge line (shinogi-zukuri), shallow peaked back (iori-mune) and medium point (chu-kissaki); length (nagasa): 2 shaku, 5.5 bu (62.2 cm.); curvature (sori): torii-zori of 2.0 cm.; decrease in width of blade (fumbari): 1.1 cm.; carving (horimono): futatsu-hi on both sides. [The blade is slightly 'tired', but the open grain makes it look more than it actually is; there are a few tiny 'chattermark' type chips on the monouchi hasaki and the ha-machi has been moved up 2 mm. due to a chip.]
Forging pattern (jihada): wood grain (itame) mixed with a strong and slightly open, straight grain (masame)
Tempering pattern (hamon): small irregular configurations (koitame) in extremely bright, sharply defined ko-nie along the edge of the hamon (habuchi); highlighted with 'swept sands' (sunagashi) near the omote ha-machi, and elsewhere with small 'rootlets', both straight and slanted (ko-ashi, saka-ashi) with 'leaves' (yo); on the ura this extends to within 7 cm. of the yokote where it becomes slowly undulating; on the omote it extends to about 20 cm. from the yokote where it becomes more subtle, but with the addition of 'islands' and insinuations of sunagashi for 7 cm. from the yokote.
Point (boshi): irregular (midare-komi) with with no turn-back (yakizume).
Tang (nakago) shape (keitai): Bizen, ubu and with a semi-moist, brown patina; file marks (yasurime): slanted (katte-sagari); end (nakagojiri): rounded (kuri-jiri); holes (mekugi-ana): one; signature (mei), katana-mei: Bizen Osafune Sukesada; date (jidai): Eisho 7-nen 2-gatsu hi (a day in the 2nd month of Eisho 7 [1510]). [Some 'fogginess' and scratching to the surface; some very small nicks on the ha-machi in the monouchi.]
Shirasaya.