From what I've read on other sites, a few people said that there wasn't any evidence this pattern was used in ww2. Alot of the pictures I've been looking at, they all have had the earlier patterns. I keep looking, but so far, no luck. Check out that militaria forum, I think they had some pics of the vietnam version there. I can't recall just now if yours is that version, look at the metal tips on the straps, and the hangers for the bayonet and e-tool and compare.