Button measures 1-1/2", cut brass background, the fan is made of nickel. This motif is sometimes named "Yum-yum, Katisha or Madame Chrysanthemum. Partly due to the popularity of two operas and a story in which they appear. The Mikado by Gilbert and Sullivan first produced in 1885. Puccini's opera Madame Butterfly was first preformed in 1904.