Hello, I am new to this site and was recommended to post here.
A reputable shop near me is selling this tsuba and said I could buy it from him for $400. I am new to Japanese antiques and such, I practice Japanese Jujutsu but wouldn't put this on a practice sword obviously. I've only found 3 sources with this signature, one was a museum post, one was a sold listing (no sold price), and one was sold for £2300 or so. I have zero idea what this is valued . I was told to ask here to see if there are any signs of it being cast, but the comments on reddit deemed that to be unlikely.
I'm posting this before going to bed, I'm excited to see the replies hopefully.