I do not have a canteen; I do have a cup. 1943 EDWARD KATZINGER
The likely problem with these is they rusted, so they were probably disposed of. Odd that I never really hear about anyone asking about one, you're the first. The black and blue porcelain and the plastic ones are all the rage.
Are you sure they made canteens out of this material? I'll have to look through my information but I don't remember seeing anything on them.