Katana in Shirasaya with Koshriae(NBTHK Tokubetsu Hozon paper) for the blade and Tsuba Signature : Mumei (Ko-Mihara) Sayagaki: Mr. Tanobe Bingo koku Ko-Mihara, O-Suriage Mumei, Nanbokucho period. This blade is typical Ko-Mihara. Blade lenght is 71.8cm. (We divide 4 sections ...