GuessLong white coat

During check-out, enjoy peace of mind and opt for an Authenticity Certificate in partnership with Entrupy, the world's first and only on-demand authentication solution.

Your purchase will be first shipped to us, authenticated with Entrupy technology. Upon confirmation, an official Entrupy certification document will be printed and shipped to you with your purchase.

With our unique service, we ensure lifelong authenticity and help maintain its value, should you decide to resell.