Chanel Vintage Gold Chain Extra Long Rhinestone CC Layering Necklace 03S

Chanel! Vintage 2003 Extra Long Necklace Gold chain wear in many styles CC Rhinestone crystal pendant eyecatching stamped 03S I'm pretty sure this is a sample piece if anybody has any knowledge please educate me! I paid to get it authenticated! 100% Authentic! condition: excellent condition, no flaws measures: 54" chanel pendant: 3/4"