Set of 6 colour lithographs signed and numbered in pencil, and 3 exhibition posters, 2 of which countersigned in pencil, including: Franquin, Jidéhem, Jacques Martin, Moebius, Willy Vandersteen Richard H. Berger Collection (1947-2025) Richard Berger had a surprising and endearing personality. He had all the rigour of figures that made him a perfect accountant, and on the other hand, the soul of a true artist. An early visitor to Art Basel, he frequented contemporary art fairs and happenings in Zurich, befriended Andy Warhol and Keith Haring, and enjoyed having his works autographed (lots 2242 to 2244). A compulsive collector, he accumulated hundreds of works in his home. An avid fan of comic strips, he liked to meet their authors (lots 1870 to 1875). An artist himself, he felt the need to create his own paintings through numerous performances and experiments... His exceptional professional skills and the total trust that could be placed in Richard Berger led him to become chief accountant at Sotheby's Switzerland, where he worked for nearly 40 years, and to collaborate with Piguet for nearly 10 years. All lots marked in green in the printed catalogue are from the Richard H. Berger collection.