Katana(Kogarasumaru) in Shirasaya(NBTHK Hozon Paper) Signature : Kiyokane. Kotobuki Ginkon Kawagishi kouroku and Nobuko. Showa 48nen 10 gatsu 23 Kisshobi Explanation: Longevity, Silver wedding anniversary, Kawagishi kouroku and Nobuko at 23th October1973. The blade was polished by high ranking polisher ...