Sotheby's Important Design sale on 28 May will offer a wide selection of European & French creations from an array of eras. From Art Nouveau to Art Deco, the 1940–1950s and the 1970s to contemporary design, it includes iconic pieces by Charlotte Perriand, Alphonse Mucha, Jean Prouvé and Jean-Michel Frank. Click the image above to view the slideshow.