It will be a Japanese soldier identification tag during the war. I don't know the details.
There is a re-engraving after correction with a line. Japanese Army Identification Tag State Although it is a vintage item, the characters are clearly visible. The item "WW2 Imperial Japanese soldier identification tag dog tag Army Military" is in sale since Sunday, December 27, 2020. This item is in the category "Collectibles\Militaria\WW II (1939-45)\Original Period Items\Japan\Other Japanese WWII Orig Items".The seller is "ryomtakeut-0" and is located in Osaka. This item can be shipped worldwide.