Ko-Shoami Fans

Edo Period (1615-1868) 

Iron tsuba with large openwork depicting fans.
Note: The actual intent of the design is not exactly clear. There are suggestions that the shape could be inome, bags of some description, beans, or even porcelain plates. I have decided on fans largely because the Met has this one depicting different fan shapes.

Mei: Mumei

Probably Ko-Shoami.