The Cartouche is close to that of Al Mar knives. And the character in the upper left is close to the symbol for Seki, a blade making city/region in Japan.
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I once owned a WW11 Japanese NCO sword. Real plain thing but a collectable, none the less. ╦╦ÇI saw one in the 70's that was given to a friend while working in Japan. It wasn't a copy, repo or tourist junk. It was a new sword, just not the quality of the early ones.