They started making that model just before the war. The split can opener and real bone scales were gone by the end of the war.
I don’t have an exact year, just general knowledge of military pocket knives.
I think they all have brass liners, which is an indicator they are early war. Brass became too important for ammo to use for pocket knives.
Yours looks unused just a little patina. It’s a nice knife.
If I have time later I will look in my books for more info.
Here are my USN pocket knives. The bottom one was not issued to my knowledge but could have been bought on base
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I often wondered why the sailors couldn’t have an awl. But I can see were a Corpsman would find it useful.
I’ve always liked Camillus knives they are high quality solid knives. They were not high end though. They were the lowest bidders and made a lot of contract knives.