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Sterling Gold Wash Clear Rhinestone Art Deco Fur Clip Brooch Pennino?

I have previously sold a Pennino brooch and the quality of this one is very, very similiar. It is a nice, heavy piece, weighing in at 39.1 grams. It is hallmarked in two places with the word “sterling” as shown in the pictures. The piece has a gold wash over the sterling. It measures 2 5/16″ long by almost 1.75″ wide. It has a double pin clip closure. The only possible hallmark on this piece is either a “6” or a “9”. I have researched to no avail. If anyone out there has any information on this quality piece, I would appreciate the information. Please check out the pictures and email with questions.