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Very Beautiful Mumei Koto Tachi Blade, In Shirasaya, Japan Certified

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Object description :

"Very Beautiful Mumei Koto Tachi Blade, In Shirasaya, Japan Certified "

Very beautiful and very old Tachi blade in his Shirasaya. Koto Blade, more exactly Chu Koto, Classified as Josaku. Era: Period (Oei Goro 1393-1424), more precisely, designated by Japanese experts: Ryakuo to Joji 1338 to 1368.

NTHK Certificate - NPO Type No. 10673, Kanteisho with a rating between 70 and 84, Classified as Important. Unnamed (Mumei) registered as of: April 19, 2020. Registration Certificate No. 13973 (required) from the Education Commission of Ibaragi Prefecture (near Tokyo, Japan).

MUMEI - Blacksmith's name: By judgment and certification of judges (4) attributed to "Naminohira Yasuyuki" Location: Former province of Sasshu (present-day Kagoshima Prefecture), in Kyushu.

Inscriptions on certificate: Length: 72cm, Curvature (Sori): 2.6cm, Polished, 2 holes in the tang. (Mekugi ana). Registered as: Mumei, unnamed. Date of the Certificate: December 15, 1961. (The numbers and date of the certificate of exit from Japan indicate the possibility of a seigneurial origin, usually known as Daimyo Toroku, obviously rare and sought after).

Naminohira Blacksmith School in the former Sasshu Province (now Kagoshima Prefecture), Kyushu.

CHARACTERISTICS:

Modified blade "O-suriage", certified authentic and transformed

Nagasa 72 cm

Sori 2.6 cm tall and Koshizori type

3 Mekugi ana

Standard Futsu gata nakago type - End type: Kiri - Modified “O-suriage” with Tsuji Chigai type

Yasurime (lime streaks tilted up and down).

Iori Mune type

Nagashi on the Nakago and on the Mune at the Kissaki

Sugata “Shinogi Zukuri” type

No-hi (without grooves)

Jihada Ko Itame type (In small wood grain)

Hamon of the Suguha type with Nioi Guchi Urumu, the Nioi Guchi is the more or less thick part doubling the Hamon at the limit of the Ji. For this blade, it appears as foggy and is dispersed over the blade, without leaving any particular delimitation. Like a cloud of fog.

Chu-kissaki type

Slight appearance of Boshi, due to an O-suriage blade

Tamahagane steel type

Faults: Presence of some Tateware (small very short and shallow slits parallel to the blade), very common on Koto blades.