Auction introduction: Sotheby’s London’s September Prints & Multiples auction presents a selection of graphic works spanning the 20th and 21st centuries. From the Belle Epoque to the present day, the prints and multiples on offer survey the evolution of modern and contemporary printmaking practices. Highlights from the modern era include early etchings like Pablo Picasso’s groundbreaking Le Repas Frugal, as well a rare and striking proof impression of his 1952 aquatint La Femme à la Fenêtre, printed before steel-facing. Contemporary printmaking is then best represented by a selection of Francis Bacon works from the collection of the Tacou family, and experimental Pop screenprints, such as Andy Warhol’s diamond-dust encrusted portraits of Joseph Beuys.