Andrew Wyeth signed handwritten note. This 3x5" card has been signed "Robin Hood" by Wyeth. The full note reads, "Was here at 11:30, wanted to take you to lunch, Call me at studio, Robin Hood." Wyeth wrote the note on a 3x5" card which has been authenticated and slabbed by PSA. Wyeth was one of the best known American visual artists of the mid-20th century. His most famous piece is called "Christina's World," which is held at the Museum of Modern Art in New York.