Coro RARE Owl pin brooch enamel rhinestones blue sterling gold wash small series

This is a VERY RARE 1940's unsigned coro owl pin, it's from the small series and the duette owls series, they made earrings, fur clips, and pins to match, I can't find the pin online but found a few other pieces and information about it, it's called chatelaine enamel small owl by coro coro craft Adolph Katz, it's 1" the duette owls are small but linked together, this is said to be sterling with a gold wash on top. I can see the sterling coming through on the back of the tail see photos, the enamel is off a little on his nose, overall wonderful condition for the age of this piece, he has bright blue topaz aquamarine colored rhinestone eyes. beautiful collectors piece, they made one series in green, and one blue, they made many pieces and some were unsigned the earlier ones. This is a very rare find here! SEE PICS OF SOME SIMILAR CORO ONES LOOK AT THE PRICES! 250 TO 700$ ! box 7 I sell in my closet and have tons of other brands similar to list such as Kirk's folly, Warner, hollycraft, Saint John, Swarovski, pandora, coro, dior, Donald stannard, lisner, renoir, Eisenberg, Christian dior,Givenchy, ciner, carolee's, hobe, Ben amun, Perez sanz, suarti, lois hill, Tiffany and co, juliana, hattie Carnegie, deliza and elster, miriam haskell, trifari, Vendome, Alexis bittar, Judith jack, kjl, vargas, Sherman, Nolan Miller, Elsa peretti sharra Pagano, Jill Fagin, Heidi daus, Jay feinberg, Germany, Japan, Hong Kong, Simon ju, Thelma deutsch, Erwin pearl, monet,