WW2 World War 2 Imperial Japanese Army canteen Water bottle vintage

  
WW2 World War 2 Imperial Japanese Army canteen Water bottle 1945 vintage Japan. I believe it is a Japanese Army canteen.

Engraved Sho 18 Kuchi No. My grandfather brought it back from the war, so I think it is authentic. Height 18 cm (4.72? We do not mark merchandise values below value or mark items as "gifts" - Japan, US and International government regulations prohibit such behavior.

Thank you for your understanding.