細節
A MINO KATANA
Signed Jumyo, Momoyama Period (Late 16th Century)
Sugata [configuration]: shinogi-zukuri [longitudinal ridge], chu-kissaki [medium point], iori-mune [shallow peaked back]
Kitae [forging pattern]: koitame [fine wood grain] with jinie [hard metal granules over the surface of the blade]
Hamon [tempering pattern]: a combination of notare [undulating], ko-gunome [small pointed curves at frequent intervals] and togari
Boshi [tip]: with a deep pointed turnback in the temper line
Nakago [tang]: suriage [shortened] with katte sagari yasurime [diagonal file marks sloping towards the back of the tang], two mekugi-ana [holes for the retaining pegs], the heel cut off at right angles, signed Jumyo below the lower mekugi-ana
Fitted with a two-tier gilt habaki [collar]
Shirasaya [plain wood scabbard]
Overall length of blade: 36 5/16in. (92.3cm.)
Nagasa [length from tip to beginning of tang]: 28 1/8in. (71.4cm.)
Sori [curvature]: 5/16in. (0.9cm.)
Motohaba [width at start of tempered edge]: 1 3/16in. (3cm.)
Sakihaba [width before tip]: 11/16in. (1.8cm.)