This is a sword made by Sesshu Osaku JuYoshishige, he was a swordsmith from Echizen Shimosaka school. Called as Ohira Jo and made swords also in the east. Originally, he was called Sesshu Osaka Ju Yoshishige and later Sagami Kami Kunimasa.  This sword is Suriage, and the signature is well carved. A beautiful “horse teeth” O-gunome midare that has a thick nioi-gucchi covered with a thick coating of ko-nie. There is ji-nie throughout. The hamon is a notare/O-gunome. The tip is maru. The hada is a dense ko-itame.  

The koshirae is a nice Floral mix of flowers and leaves. The tsuba, fuchi/kashira and menuki compliment each other well. The tsuka Ito is black and the sageo is a light purplish hue. The saya is a black lacquer to match.  The sword is in a very nice shirasaya with horn inlay and the koshirae has tsunagi.

The sword comes with a certificate from the Japaneses sword museum, the NBTHK.  The NBTHK awarded this sword with the higher Tokubetsu Hozon paper.

Some extra interesting information about this swordsmith:
The area of Osaka-fu Chuo ku Toriwa-cho. It was the same town where Sukehiro lived, there also lived Echizen no kami Kanesada, Hitachi nokami Muneshige, Kawachi no kami Yasunaga, Sagami no kami Kunimasa, Omi no kami Tadatsuna, and Settsu no kami Tadayuki. Around that area, over 30 sword smiths were living, and these also included Inoue Shinkai, and Omi no kami Sukenao. In addition, there were all kinds of sword craftsmen and related shops, such as horimono carvers, polishers, saya makers, saya finishers, sword dealers, kanagu makers, tsukamaki crafrsmen, same shops, and menuki shops. A little farther away, next the riverside, there were steel and iron wholesalers such as Kawasakiya, Chigusaya and Amagasakiya. In this environment, the Osaka Shinto smiths were working hard to create a new type of sword which had never been seen before, and finally the Nidai Sukehiro developed the original Toranba midare swords. In the early Edo period, around the time of Kanbun, Sagami Mori Kunii, who wielded a hammer in Osaka and Tokiwa Town, was the first work of Yoshishige Mei. He studied sword making under the second generation Tamba Yoshimichi, and also called himself Genwei, and later moved to Iyo. This was the swordsmith known as

KUNIMASA , Kanbun , Iyo – “Sagami no Kami Fujiwara Kunimasa” ,
“Sesshū Ōsaka-jū Yoshishige” , he came originally from Settsu province and was there a student of
the 2nd gen. Tanba no Kami Yoshimichi (丹波守吉道), he signed in early years with Yoshishige (吉重), ko-itame, mostly
a chū-suguha, also a hiro-suguha with nie-kuzure, a sudareba or a ō-gunome, chū-saku.