This blade was signed with
於紀南貞行作 Made by Kinan Sadayuki
昭和二十年正月日 January 1945
Length of the blade: 60.3cm.
 
Info on the smith:
SADAYUKI (貞行), Shōwa (昭和, 1926-1989), Wakayama – “Ryūjin Tarō Minamoto Sadayuki” (龍神太郎源貞行), “Nanki Ryūjin ni oite Minamoto Sadayuki kore o tsukuru” (於南紀龍神源貞行造之), real name Adachi Sadakusu (安達貞楠), born March 28th 1909, he studied under Kawano Sadashige (川野貞重) and worked as kaigun-jumei-tōshō, he lived in Wakayama´s Ryūjinmura (龍神村), his nickname Ryūjin Tarō (龍神太郎) alludes to the local context.