Some help with a mei perhaps?

[Sunny]

I was wondering who’s name this is ?

does it look legit with the file marks on this old blade ?

it’s on a Tachi blade in a Tachi koshirae 

thanks so much for any assistance 

cheers 

[Ray Singer]

This Kaneyasu (Hidari Mutsu). This smith is known for writing backwards, as yours is. Not confirming it is a real Hidari Mutsu, just that it is at minimum purporting to be so.

[Mikaveli]

I was going to ask if the image was flipped, as I hadn't seen the person radical on the left!

 

Was this a thing then? Signing backwards 😲

[Ray Singer]

For Hidari Mutsu Kaneyasu it was, yes.

https://www.aoijapan.net/katana-mutsu-kami-kaneyasu-hidari-mutsu/

[Sunny]

5 hours ago, Ray Singer said:

For Hidari Mutsu Kaneyasu it was, yes.

https://www.aoijapan.net/katana-mutsu-kami-kaneyasu-hidari-mutsu/

Once again Mr. Singer you reputation proceeds you.

Thanks so much.

Now I know why it's so pricey lol

Clean blade though.