A water bottle used in the Navy of the former Japanese army It is a real thing. It is a enamel type. I often see water bottles, but those with the Ikari mark It's pretty rare.
International Buyers - Please Note. The item "WW2 Imperial Japanese Navy water bottle Military Antique Free/Ship" is in sale since Friday, May 1, 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.