An important ceremonial sword from the Aoyama daimyōLate Edo period, 19th centuryThe blade signed Morishige (Osafune Morishige, Muromachi period, circa 1400)NBTHK Jūyō TōsoguNBTHK Hozon TōkenKoshirae length: 81.2 cm; blade length: 47.3 cmProvenance:Auction of the estate of Viscount Aoyama, Tokyo, 15-18 January 1935, lot 186Sayagaki: The inscription on the shirasaya by Tanobe sensei reads: “Bizen [no] Kuni Osafune Morishige. Signed with two characters. With an excellent tachi koshirae from the Tamba Sasayama Aoyama clan. Blade length: 1 Shaku, 5 Sun 5 Bu. Written in 2011 by...