Elegant Coro swan brooch with rhinestones and baguettes

At first I thought this brooch was just a ribbon design, but then I saw a proud swan head and body, then another head - am I seeing things? Whatever the case, this 2-1/2"X1-3/4" piece is definitely pretty. Initially, too, I couldn't identify the maker, but I found the exact piece online clearly stamped Coro, and I now evidence of the Coro stamp, but poorly applied and quite faded (see last picture). My research also suggests that the brooch is about 75 years old, but it is in great shape with no missing stones and only slight crazing on the metal surface, primarily on the back and even there hard to see without magnification.