Katana in Shirasaya, with Koshirae(NBTHK Hozon paper) Signature : Mumei(Katsumura Masakatsu) (We divide 4 sections for each sword as Saijyo saku, Jyojyo saku Jyo saku and regular saku) This :Mumei(Katsumura Masakatsu) belongs to Jyo-saku ranking. The blade was polished Habaki ...