Vintage MCM Signed Coro Goldtone Clear Rhinestone Leaf Feather Brooch Pin Great condition! A little gouge & mottling on the goldtone stem. See photos for details. Measures aprox 1 1/2" wide 1 3/4" long Coro was founded in 1900 and began using the Coro name in 1943. Prior to that, they were known as Cohn & Rosenberger. They closed in 1979.