Why Luxury Authentication Disagrees Between Platforms
The short answer
Two resale platforms can authenticate the same item and reach different verdicts because each one trains its authenticators differently, uses different tools, and holds its verdict privately. There is no shared standard, so a verified stamp from one platform carries no weight on another.
The training gap is real and documented
Authentication requirements vary widely across the industry. Some platforms require a minimum of around 40 hours of training before a new authenticator can sign off on an item. Others require years of hands-on experience, and the most rigorous internal certifications can take thousands of hours to complete. None of these standards are shared, published, or cross-recognized. A person authenticated to work at one platform starts from zero at the next.
This is not a hypothetical problem
Roughly one in five resale items in the luxury market shows signs of being counterfeit or unverifiable, and the fraud exposure across the resale market runs into the billions of euros annually. Authentication is supposed to be the fix. Instead, it is fragmented across dozens of private standards that do not talk to each other.
What this means for buyers and sellers
A buyer cannot check whether an item was authenticated by someone with 40 hours of training or 4,000. A seller who has built years of trust on one platform cannot carry that authentication history to another. Every transaction, on every platform, starts the verification process over.
What a shared standard would change
Authentication that travels with the item and the person, not just the platform, means a buyer can see who verified something and how that verifier's track record holds up over time, not just a checkmark with no history behind it.