RARE Matisse Brooch & Earrings Set-Demi Book Piece

Matisse " Theatrical" Mask and Earrings Demi Parure is hard to find as a set and is a book piece set. It can be seen on Pg. 79 in the book "Copper Art Jewelry" by Burkholz. Brooch measures 1 inch long by 2 and 1/2 inches wide. A gleaming copper swirl setting holds a theatrical or Mardi Gras mask that is enameled in black, red and gold. Secure working clasp. Signed copyright Matisse in script. Mask earrings are clip on style and measure 1 and 1/4 inch long by 1 inch wide. Very good condition.