Original Field Bottle (Canteen)?

[Johnnie]

I think postwar also. The color of the straps and cup don't seem period to me.
Johnnie

[Colorado]

So that seems to answer the question if they make these post-war.

[Johnnie]

Actually yes they did, in at least the standard and tropical models. They were made both for the emerging border police and the civilian camping market. I believe it was the same factories that made wartime models.
Johnnie