Ordering number: 22389
Katana in Shirasaya(NBTHK Tokubetsu Hozon Token)
Signature: Mumei(judged as Yamato Shizu)
(There is some trace of gold inlay left on Nakago: so the signature is unknown.)
(We divide 4 sections for each sword as Saijyo saku, Jyojyo saku Jyo saku and regular saku)
This sword belongs to jyo jyo Saku ranking.
habaki: Silver single Habaki.
The blade was polished.
Blade length: 68.1cm or 26.81 inches.
Sori: 1.0cm or 0.39 inches.
Width at the hamachi: 2.98cm or 1.17 inches.
Width at the Kissaki: 2.28cm or 0.89 inches.
Kasane: 0.69cm or 0.23 inches.
The weight of the sword: 755grams
Era: The Nanbokucho period.
Shape: O-Suriage Mumei, wide and thick Katana with small Sori, longer Kissaki.
Jigane: Itame Hada well graiend with Masame.
Hamon: Nie Deki, Gunome Midare with many Ashi. The Ha is soft. There are Sunagashi and Kinsuji. Boshi is round shape and Hakikake style.
Special feature: Sayagaki said that Ecchu Koku Norishige. There are traces of gold powder signature on the Nakago. But it is unknown. NBTHK judged the blade as Yamato Shizu. On the Shinogi, Itame Hada and Mokume Hada mixed. It is a beautiful sword with a Nanbokucho style.
From Aoi Art: There are some rough texture parts on the blade.
Sayagaki said that Ecchu Koku Norishige. It possesses the atmosphere of Norishige. In any case, there is no doubt that it is Shoshu Den of the period of the Nanbokucho. In the Nakago, there is a gold powder signature. But unfortunately, it is unknown. We recommend this sword.
NBTHK Tokubetsu Hozon
Aoi Art estimation paper: whole Oshigata by Ayaka Tsuruta