YSL Yves Saint Laurent Vintage Gold Tone leaf Necklace. Rare piece

This beautiful the only one out there leaf YSL necklace is should be in your collection. Lots of wore on the leaf and clasp. The leaf has gold tone lost here and there but it is still STUNNING. The chain is in an excellent condition please see pictures for more details. I also used 14 karat and 18 karat acid to test the metal and it tested blue for sterling but I am NOT saying this is Sterling after 15 minutes acid still shows blue.