Item description here:

This is a kodachi made by Kaga Yukimitsu.  There were a few generations but this sword clearly dates back to the koto era and is more than likely made by first 3 generations of Yukimitsu that are listed below.  The sword is in an older but good polish and has been well made.  The hamon is very active and shows many hataraki (activity). The shape is elegant and well balanced. The hada is masame itame mixed.  The hamon is gunome midare and shows a mixture of nie and nioi.  Utsuri is visible in the hada also and the sword is in very good condition for its age. 

NBTHK HOZON certificate authentication the sword is included in the sale as is a shirasaya and tsunagi for the the blade and mounts.

Yukimitsu generations:

YUKIMITSU (行光), 1st gen., Eiwa (永和, 1375-1379), Kaga – “Fujishima Yukimitsu” (藤島行光), “Yukimitsu” (行光), according to tradition the second son of the 1st gen. Fujishima Tomoshige (友重), he is also listed as student of Kashū Sanekage (真景), there are tantō with a wide mihaba and muzori extant, the jigane is a standing-out itame with ji-nie and chikei, the hamon is a ko-notare mixed with gunome and many sunagashi as well as hakikake and nijūba along the habuchi, chūjō-saku

YUKIMITSU (行光), 2nd gen., Ōei (応永, 1394-1428), Kaga – “Kashū-jū Yukimitsu” (加州住行光), “Yukimitsu” (行光), “Kashū Fujiwara Yukimitsu” (加州藤原行光), itame mixed with masame and ji-nie, the hamon is a suguha or ko-gunome with sunagashi

YUKIMITSU (行光), 3rd gen., Kōshō (康正, 1455-1457), Kaga – “Kashū-jū Yukimitsu” (加州住行光), “Yukimitsu” (行光), “Fujiwara Yukimitsu” (藤原行光)

The mounts/koshirai information:

These mounts are in pristine condition.  The lacquer work on this sword is very beautiful and detailed with abalone shells inlayed.  The lacquer and silver fittings are in a class by them selves.  This type of lacquer work is not commonly found and is a fine addition to any collection.  Also note that the habaki is very heavy, and possibly is solid gold. Generally habaki made of copper are not as heavy.