These canteens were made in Japan in the 1960's and are exact copies of the common aluminum canteen made in the USA by Mirro, Aluminum Goods Manufacturing Co. (AGMCo) and other manufacturers during WWII.  This comes with a canteen cup that is unmarked and an original USGI Canteen Cover.   Has some dents and could use a good cleaning but it is watertight and would make a nice display item or good for camping and hiking use.