All items are pre-screened for authenticity before being permitted onto the Hewi platform. All ‘Managed by Hewi’ items have been physically authenticated in house by our team of trained experts, all items sold from ‘Private Sellers’ have been digitally authenticated by our team based on 10 year history of experience and data. Sellers are not paid until a buyer has confirmed receipt, or a time frame has passed to ensure you can always flag if any issues arise.