Embellishing Bruce's post:

From the "Register of Names of Seki Forge Swordsmiths Since Showa 14, October [1939]"

兼藤 藤井虎夫 S15.07.22

Smith name: Kanefuji
Civil Name: Fujii Torao
Entered into the Seki Guild list: Showa 15 [1940]

-- Guy