Would like to know makers name from signature, possible age of Wakizashi, and if the marks on top of tang are just for fittings

Hello, would like to get an approximate age and signature identification of this Wakizashi. Also, on top of the tang are some marks, I am assuming they are fittings numbers?. Thank you.

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Kanetomo

The signature is "KANETOMO".
Perhaps early to mid Edo period. That's just a guess, based on the appearance of the nakago.

Pete