细节
A MUSASHI NAGASONE KATANA
EDO PERIOD (CIRCA 1650), SIGNED NAGASONE OKISATO NYUDO KOTETSU
Configuration (sugata): with longitudinal ridge line (shinogi-zukuri), shallow peaked back (iori-mune) and medium point (chu-kissaki); length (nagasa): 2 shaku, 4 sun (73.0cm.); curvature (sori): koshi-zori of 1.7cm.
Forging pattern (jihada): 'pear-skin' wood grain (itame nashiji).
Tempering pattern (hamon): double gonome midare in nie. Point (boshi): flame-brushed tip (hakikake).
Tang (nakago). Shape (keitai): regular and squared; file marks (yasurime): new (kiri-yasuri); end (nakagojiri): squared (kirijiri); holes (mekugi-ana): one; signature (katanamei): Nagasone Okisato Nyudo Kotetsu, inside: Tameshigiri kin-zogan, dated Kanbun 1 (1661), attestation by Yamano Kaemon.
Shirasaya.
EDO PERIOD (CIRCA 1650), SIGNED NAGASONE OKISATO NYUDO KOTETSU
Configuration (sugata): with longitudinal ridge line (shinogi-zukuri), shallow peaked back (iori-mune) and medium point (chu-kissaki); length (nagasa): 2 shaku, 4 sun (73.0cm.); curvature (sori): koshi-zori of 1.7cm.
Forging pattern (jihada): 'pear-skin' wood grain (itame nashiji).
Tempering pattern (hamon): double gonome midare in nie. Point (boshi): flame-brushed tip (hakikake).
Tang (nakago). Shape (keitai): regular and squared; file marks (yasurime): new (kiri-yasuri); end (nakagojiri): squared (kirijiri); holes (mekugi-ana): one; signature (katanamei): Nagasone Okisato Nyudo Kotetsu, inside: Tameshigiri kin-zogan, dated Kanbun 1 (1661), attestation by Yamano Kaemon.
Shirasaya.
来源
Lillard P. Miller, San Antonio, Texas