IT depends on the cover andy, does it have alice clips, or hook thingies that attatch to the holes in the pistol belt, example, upper is M-1910 with "hooks", bottom is alice clips, if it has the hooks, then yes it is a WW2 era canteen cover, if notm you're lookitng at the M-1956 cover, which is still nice, I have one, and I'm looking for another.