I have been buying on Catawiki for over a year, and here is what I have discovered: 1) The experts are a joke. They have absolutely no idea what they are selling, and they 2) elevate the "estimates" liberally. 3) You have to be VERY savvy to know if the auction item is authentic. The vast majority of the ancient items are FORGERIES. This is true with everything from Egyptian to so-called "Viking" pieces. They claim that 19th century excavated bronze rings are "medieval." Any novice would be fooled. I have a long experience in early pieces, and there are finds to be had, mainly because the "experts" had no idea what they were looking at. (I have acquired several pieces which pre-date the so-called "expert's opinion.) That said, CAVEAT EMPTOR. Research the sellers. Their largest ones are known in the trade for selling fakes. Use common sense, because bidding with Catawiki is a game that can cost you! Moreover, Catawiki customer service is non-existent, and EVERYTHING ships late. Sometimes months late. Honestly I cannot recommend this auction house; they can be as bad as eBay.