Any thoughts about this tsuba?

[SalaMarcos]

Dear colleagues,

I'm studying a Spanish collection and I can't find any ideas about artist or school. I found other similar examples but all mumei from the XVIII century. It's clear that it's a good zōgan work, with some links with Mito works. 

Do you have any thoughts or guess about this tsuba?

[MauroP]

Aizu-Shōami or Mito?

[SalaMarcos]

Thinking again thanks to Mauro suggest, I think could be not a XVIII century but a middle XIX century of Aizu Shoami tsuba after they received the visit of Kono Shunmei.