Certificate of Origin of A Chopard Happy Diamonds Gold Earrings Plus International Guarantee. With Important Notes of The Jewel On The Back of It and the Luc Official Stamp. Our Place of Business in Barcelona Offers All The Security and Reliability That You Are Looking for When Purchasing to Collecible. Our Team of Professionals Work Day for Bringing You The Best Opportunities and Services. Episteme Vintage Collectors has years of experience in the sale of watches and collection items. Our commercial headquarters in Barcelona offers all the guarantee, seriousness and security that it seeks to acquire a collection article. Our team of professionals works day by day to offer you the best opportunities and services. The manipulation time of the article after the purchase is a working day. The.