Mal, thanks and I see you’re closer to Wedgetail Industries than I am. Thanks for the information. And if I am gleaning everyone’s input, so far. I believe I have a Japanese Army Shin Gunto, that was made somewhere in the early 1940’s, and it was forged by Amaike Reiichiro Masatsune, who was born 1894 and died 1949. He worked under Seki and Sho stamps. The sword I have is a Showa Era sword. Thanks for the file, it helped learn more than I know. By the by, would you happen to know what the 4 diagonal dots on the nakago mean?