Ordering number : 15489 Katana in Shirasaya witn Koshirae(NBTHK Tokubetsu Kicho paper) Signature : Mumei(unsigned) attributed as Yamato Kami Yasuyuki, shinto: Cyujyo saku ranking:Wazamono cutting test ranking:Satsuma province. (We divide 4 sections for each sword as Saijyo saku, Jyojyo saku ...