This sword is a beautiful mumei katana. The hamon is a notare-ish midare  based in chu-suguha with some gunome midare. It is layered with sunagashi and kinsugi the entire length of this tempered edge. There are hints of togare-ba as well. The blade is peppered in Jinie and Yubashiri appears to ghost the hamon in certain places. The hamon also erupts and flares out in the monouchi area and kisses the shinogi. The hada is a prominent swirling  itame covered in ji-nie and chikei also abounds within. Burls of mokume can be seen as well. The blade is O-suriage with 2 mekugi-ana. The boshi is maru

The mounts are very nice and add to the overall presence of the blade. The tsuka is a handachi  like style with menuki of gold tiger in bamboo. The fuchi kashira are a deep shakudo finished with gold sea=life in waves. The tsuba is also styled in waves with a dragon in gold. The tsuka is wrapped in black ito and the Sageo is gold, trimming out a red lacquered saya. The habaki is finished with streaking and gilded with gold. The blade is also in shirasaya to protect the finish of the polish.

Information on JUMYO:
JUMYO(Toshinaga) 寿命 school, it’s founder was born in Seki town, Mino province in Tensho 8 (1580), real name was Kondo Sukezaemon 近藤助左衛門. He had moved to Kiyosu castle town during Keicho(1596-1614) period and the enjoyed Tango-no-kami 丹後守 title in Kanei 2 (1625). JUMYO school had been prospered in 5 generations during Edo period under the patronage of Owari Tokugawa clans. JUMYO(Toshinaga) 寿命, it exactly means [happy long life] so that most of Samurais treasured JUMYO works.