Coro Craft Duette Sterling Silver Swallows Pin Brooch

This is a fabulous and sought-after Coro Craft Sterling Swallow Duette. Marked in a rectangular plaque Sterling Coro Craft with the pegasus as part of the trademark. The vermeil duette has a lovely gold-tone to it with a nice patina over sterling. The duette frame does not have a patent number embossed on the surface. A beautiful example of a Coro figural bird pin. The duette offfers two pins to be worn separately or together as a single piece when worn as a duette. Designer Adolph Katz. The piece is reference in A Tribute to America  Costume Jewelry 1935-1950 by the Brunialtis on page 79 and 80. The original patent was filed July 20, 1944. The patent rendering features the “Triquette.” The pictures reflect different lighting and editing programs. Exact color seems to be in between darker images and the last image.