Shodai Musashi Daijo Korekazu (初代武蔵大掾是一)
The first Musashi Daijo (the third rank official of Musashi Province) Korekazu (Korekazu ISHIDO) was a sword craftsman in the Edo period.
By the classification of Japanese sword, his works are classified into the excellent quality, and generally called 'Kawakami Sakon.'
Korekazu was originally from Omi Province and moved to Edo to make swords. His sword's hamon (the figures appeared on the surfaces of a sword) was Choji (nuts of cloves) of Ichimonji style (a style originated from a sword craftsman Ichimonji). On shinogi (the streaks of each side of a sword) of his swords, sharp masame (straight grain) can be seen, unlike Ko-Ichimonji style (older Ichimonji style).