Katana in Shirasaya(NBTHK Tokubetsu Hozon paper) Signature : Mumei(Sue-Sa) Chu-Koto: Chikuzen (We divide 4 sections for each sword as Saijyo saku, Jyojyo saku Jyo saku and regular saki)This sword belongs to Jyojyo Saku ranking. The blade was polished by high ...