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I'm no expert at all, but have researched a fair amount on account of having one of these as well.
That being said my thoughts could be all wrong! To me though, the blade looks like a late war example at best, although I would have expected to see serial number on it in that case. I don't see a discernible temper line, and wonder about the construction of the blade that resulted in the evident damage, where a highly tempered blade would split more along the grain of the metal. There are a few other oddities about just how it is worn...I almost wonder if this was a reproduction that got beaten up to appear battle worn

I hope that isn't the case, and that I am wrong, so hopefully someone more knowledgable will chime in.
There are of course sites that specialize in these if no certain answer arrives here.