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Hi, I recently bought this Wakizashi, the mei can be seen to say "Rai Kuni" but unfortunately due to suriage, only the first characters can be seen, I'd love to know which smith made this, so far I've ruled out Rai Kunitsugu and Rai Kunimitsu due to the styles of characters being different. But now I've hit a dead end, so wondered if anyone had any ideas of who it could be or how to find out? Any information would be much appreciated!