Muromachi Wakizashi, circa 1530 with strong hamon & utsuri, ubu nakago (original tang) & a solid silver habaki. the blade is in traditional Japanese polish, which brings out the grain of the forging & the temper details. the blade qualifies as a wakizashi but May also be called an o-tango due to the size. This restrained style of koshirae without tsuba or tsukamaki was specifically for occasions in formal dress. the kogai is in gold & black shakudo with formal kirimon motifs. the kozuka is in shibuichi & gold depicting Jurojin, one of the Chinese immortals, with his fan.