Description of art was: oil on canvas. In fact, it was a digital print that had been painted over with oil. It came with a certificate of authenticity for a digital print but no indication of serial number. In fact the same one had already been sold on their site and another one was up for auction, so hundreds could be made and sold with Catawiki's blessing. Unfortunatelyy, I only discovered this when I had already paid. I complained to catawiki that purchase did not match description on their site. They have turned down my complaint as I did not provide enough evidence ( their description, a photo of the 'art' and the certificate of authenticity should have been sufficient proof!) But no... No refund. I am thinking of contacting trading standards.