Vintage Art Deco Coro Duette Silver Dress/ Shoe Clips Brooch

Lovely Art Deco Coro duette dress / shoe clips/  brooch signed with Patent 1852188, registered by E.A.Phinney in 1932 used in Coro duettes, the pin base is signed with Pat#, the brooch is made out of silver tone rhodium plated metal, accented with clear paste stones dazzling like real diamonds, looks beautiful when worn as a dress adornment, lapel pins or collar clips, really trendy! Condition: the mechanism works great, some age appropriate wear/aging signs to the metal consistent with normal use, a few missing stones but not really noticeable, from a non-smoking environment. Measurements: 6 cm.