A Wakizashi for comment.

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Originally Posted by Cerjak

HELLO
It is a difficult choice ,first I need to know how old this blade could be .May be we could estimate a range of age from the tsuba ?

Best
Cerjak

You can only estimate the age of the tsuba, its not going to be an indicator of the age of the blade. Japanese sword furniture was often changed as fashions changed , but the blades were handed down through the generations.