Vintage Signed Sarah Coventry Butterfly Pin Brooch Silvertone "Madame Butterfly"

Made in 1971 by Sarah Coventry its marked "SARAH COV" on the backside of it and it's a silver tone butterfly brooch pin titled "MADAME BUTTERFLY". 2 5/8" across from tip of wing to tip of wing and 2" tall from tip of top wing to bottomside of bottom wing. Weighs 23.89 grams. The clasp works great as it should. Now for the flaw...several parts on both the front and back have the shiny overcoat peeling off leaving the dull gray of the base shining through. Good physical shape. Smoke free home.