Straw Boater or Boater made from Straw, I already posted information about these hat, not much more to say.
Normally they have a ribbon around the crown this one maybe never had one or it was removed not really possible to tell.
This hat is actually a little too small for my head and sits too high and thus unconforatable to wear.
This hat also has a lump missing from the brim.
Older photo of me wearing it.