Christie’s, the British auction house, has been immersed in the non-fungible token (NFT) art and collectibles industry since 2020. Previously the British auction house sold blockchain-backed items like Block 21 of “Portraits of a Mind” and Cryptopunks. Once again, starting from 1st October 2021, Christie's is eyeing to auction a unique set of old 2017-issued Curio Cards, and the set will also include a secret rare card.