The subject of this video produced for Antiques Roadshow is a food-stained napkin with doodles of butterflies signed by the late, 20th Century pop-artist Andy Warhol. The napkin may have come from Diana Vreeland, one of Warhol's closest friends back in 1983 and 1984. Kathleen Guzman, appraiser of paintings and drawings, appears confident that the signature is genuine and suggests an astonishing value for the napkin if the owner were to get it authenticated by the Andy Warhol Foundation.