Hi everyone-- Wondering if anyone has any experience authenticating watches? My friend just bought a Chopard watch at Costco and thinks it's authentic, but apparently they had some problem with Gucci watches a few years ago, so she's worried. Can one just have an authorized dealer look at the jewelry and render a decision? Pictures don't seem adequate since the "deel" of the jewelry is important also. I'd love to buy a watch at a discount but I am somewhat of a 'fraidy cat since Costco isn't an authorized dealer, and I wouldn't want my watch repossessed if I requested authentication. TIA!