It is a return item from overseas. According to the previous owner, it was from the Zero War that crashed during the attack on Pearl Harbor.
Details about this part are testimony of the previous owner and cannot be certified. I don't know what this part is. If you can see this picture, please let me know.The diameter is 14.6 cm. Something like an alphabetic symbol is written on the outside, and the number "35" is written on the inside. Dzus fastener, which is considered to be made in a foreign country, is attached. According to the previous owner, prewar Japanese Navy aircraft used foreign small parts. Also noteworthy is the 8 mm gun mark. Due to this hit, the outer surface of the paint and a part of the inner zipper are missing. It seems to be a valuable material. The item "WW2 Imperial Japanese Army Possibility of zero fightr parts Very Rare Military" is in sale since Monday, April 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.