CHANEL Work by Robert Goossens Rare "Optique" cuff bracelet in gold metal engraved with "Chanel Coco Paris" - diameter: 7.5 cm, width: 4.5 cm, circa 1980 This was purchased at Saks Fifth Avenue in the 80s. Authenticated by Vestiaire as real but the design of the bracelet does not include the stamp that is on modern Chanel jewelry, which is why it didn’t pass their “quality control”. It is authentic.