Banksy is scheduled to offer a new work, titled “Girl and Balloon on Found Landscape,” in an invitation-only auction in New York on May 20, according to reporting. The piece is described as a previously unseen work and is expected to attract high bids, with estimates in the sources placing its value around $18 million. Commentators referenced in the coverage compare the work to “Mona Lisa,” a description attributed to critics rather than the artist. The auction is presented as a high-profile, glitzy event, with access limited to invited participants. The sources agree that the work will be put up for sale rather than displayed publicly in connection with the auction announcement. No additional details about the medium, provenance, or the auction house handling the sale are provided in the excerpts. Overall, the reporting centers on the artwork’s impending debut at auction, its anticipated financial impact, and the critical comparisons made ahead of the sale date.