COA from Entropy or Authenticate First Everything in my closet has been authenticated through a third party authenticator. I know that purchasing a luxury item online can be scary sometimes though. So if you would like additional authentication for your peace of mind, you can purchase here and bundle with your item. I will then send the COA with the purchased item. I want anyone who purchases from me to have 100% confidence in what they are buying! And keep in mind that Poshmark authenticates anything over $500 for free, so that’s an additional layer of authentication! Happy Shopping!