Vintage RARE CORO dress clip molded glass flowers enamel florals art deco

After research and talking to the estate agent, this piece is VERY rare htf and is very old, they call it art deco, it's one of Coro's earliest pieces, the center perriwinkle blue cabachon is a bouquet of molded glass flowers set in an enamel wreath of blue and white flowers, the silver part is rhodium plated over ? not sterling and I don't think it's pot metal either, it's very pretty and the clip part has a engraved swirly flower look pattern. Coro is just under the biggest circle cut out. Pat pending is on the underneath when you open the clip. This is in amazing excellent condition! The glass doesn't have any chips! The only other piece JUST like this I found said it was celluloid THIS IS DEFINITELY glass, not celluloid or thermoset. measures- 1.75" long box 22 I sell in my closet and have tons of other brands similar to list such as weiss, Stanley Hagler, Alice caviness, Demario, Navajo, James Avery, miriam haskell, Jomaz, hattie Carnegie, juliana, Lee sands, Barse, native American, coro, vior,Donald stannard, lisner, renoir, Eisenberg, Christian dior,Givenchy, ciner, carolee's, hobe, Ben amun, Tiffany and co, Vendome, Alexis bittar, Judith jack, kjl, vargas, Sherman, Nolan Miller, Elsa peretti sharra Pagano, Jill Fagin, Jay feinberg, kenneth Jay lane, Germany, Japan, Hong Kong, Simon ju, Thelma deutsch, Erwin pearl, monet, Napier, Cynthia Daniel, Judith McCann, hollycraft, Joan rivers, Elizabeth Taylor, Anne klein, Oscar de la Renta, Moschino,