1973's Mao presents the iconic image of the CHinese revolutionary leader that Warhol himself lent such strength and recognition in the United States. Warhol's images of Mao date from the time of President Nixon's historic visit to Beijing. They act as a foil to the glamour portraits that dominated Warhol's output during this period. In this drawing Warhol showcases both his draughtsmanship and his sense of Pop irony, converting a mass-produced image into a unique hand-drawn work of art.

Andy Warhol (1928-1928) Mao XI drawn in 1973, pencil on paper, 92x91 cm. Estimate :£70,000-100,000

Warhol's iconic pop image times ten. The dynamic colour combinations and classic imagery make this set a perennially important addition to any post-war painting and print collection. Andy Warhol (1928-1987), Marilyn (F $ S.22-31). The complete set of ten screenprints in colours, 1967, from the edition of 250, all 36x36 in (91.4 x 91.4 cm). Estimate :$250,000-300,000

ANDY WARHOL. Marilyn (F. and S.31) screenprint in colors, 1967, on wove paper, signed in pencil and numbered 189/250 on the reverse (these were also 26 artits's proofs), published by Factory Additions, the full sheet, some monir staining and an occasional unobtrusive surface scuff showing mostly at the sheet edges, pale mat staining on the reverse, otherwise in very good condition, framed. S.36x36 in (915x915mm). Estimate :$20,000-25,000