Vintage Damascene Retractable Fan Brooch Pendant

Beautiful Vintage Damascene Retractable Fan Brooch Pendant. Folds up. Has bale for chain to wear as necklace and has clasp to wear as brooch but it doesn’t have a “roll over clasp to keep the pin secure. I did search the internet for similar pins and i couldn’t find one with a roll over clasp and I’m not sure why it’s made that way. Measures 1 3/4 inches tall by 2 3/8 inches wide. My Aunt has had this for a very long time, the front is in good condition but the back does show signs of wear but I’m sure a jeweler could easily buff it up for you and put a better clasp on it. This is called an articulate piece because of the moving parts.