Ordering number : 18541
Katana in Shirasaya, with Koshirae.(42nd NBTHK Juyo Paper)
Signature : Mumei (Mihara Masahiro)
The blade was polished
Habaki :gold foiled double habaki.
Blade length : 72.72 cm or 28.62 inches.
Sori : 2.1 cm or 0.82 inches.
Mekugi : 2
Width at the hamachi : 2.94 cm or 1.15 inches.
Width at the Kissaki : 1.89 cm or 0.74 inches.
Kasane : 0.68 cm or 0.26 inches.
Era : Nanbokucho period.
Shape : Regular size with deep Sori Katana. Almost Ubu Nakago.
Jitetsu : Ko-Itame Hada well grained with Jinie attached. There are Chikei.
Hamon : Nie Deki, Suguha, there are double Ha. In Ha, there are many Ko-Ashi.
On the front side, Boshi is small around shape.
On the back side, Boshi is Yakidume style.
Special feature : Mihara school had been prospered from late Kamakura
to late Muromachi period in Bingo province present Okayama prefecture.
The representative swordsmiths were Masaie and Masahiro.
Especially the works of last Kamakura period to Namboku-cho period
are called Ko-Mihara, and are distinguished from the later period.
This sword is unsigned attributed as Mihara Masahiro by NBTHK paper
which is precious because of correct signature Masahiro not just only Mihara.
This blade has Yamato style and Aoe style.
This blade is elegant and masterpiece.
Tsuba : round shape iron Tsuba, dragon is engraved with open work.
Fuchikashira : Shakudo Nanako, dragon is engraved with gold color.
Saya : Black Roiro Saya.
Menuki : Shakudo, dragon is engraved. large size.
42nd NBTHK Juyo Paper
Aoi Art estimation paper : whole Oshigata.