RARE 1942, Adolf Katz Coro Craft Sterling Jay Birds Duet Fur Clips/Conversion Brooch, Enameled Sterling BirdsRare lovely, ruby eyes, I don't know if they are diamonds or rhinestones, but all are intact, very old, from an estate of elderly lady, 3" long, 2 1/2" wide. Pat. # 1798867 marked sterling marked 4 places on back, Coro Craft sterling mark as show. Because of the rarity of this item, I will not take offers, it will go through auction, thank you.