German WWII M31 Aluminum Canteen with Bakelite Cup & Strap Set Copied directly from a WW2 original in the IMA collection. High quality M31 aluminum canteen water bottle with replicated wartime markings & screw top cap. Felt and leather constructed cover featuring correct snaps. A bakelite (plastic) cup with correct dimensions and even marked properly with 1940 date and manufacturer code gfc. Leather M31 Canteen strap with stamped WW2 marking.