Before the weekend begins, British auction house Christie’s will be selling the works of more than 250 artists. The two-day auction in London will see an international selection of Post-War and Contemporary works including, most notably, those of Francis Bacon, Yves Klein and Lucian Freud.

Beginning on the evening of February 11, the first auction will shine a spotlight on major achievements of British art over the past 50 years. The auction will feature two of Freud’s most personal portraits of his daughters. “Head of Esther” (1982-3) and “Head of lb” (1983-4) have been included in all of Freud’s major retrospectives, including at the National Portrait Gallery in London and Tate Britain London. Both feature warm hues and are done with subtle strokes of impasto. “Head of Esther” is estimated to be worth between £2.5 and £3.5 million ($3,640,000 – $5,096,000), as is “Head of lb”.

Lucian Freud’s “Head of Esther”

Francis Bacon’s “Two Figures” (1975) will also be a centerpiece in the evening auction. This is a self-portrait of Bacon, conjoined with the figure of Bacon’s muse and lover, George Dyer. Bacon made the painting in Paris shortly after Dyer’s suicide in 1971. Michael Peppiatt, Bacon’s biographer and curator, will be selling the painting. A close personal friend of the artist, Peppiatt acquired the work directly from Bacon. “Two Figures” is estimated to be worth £5 to £7 million ($7,280,000 – $10,192,000).

Francis Bacon’s “Two Figures”

The day auction on February 12 celebrates the art of portraiture. Yves Klein’s work will be one of the highlights. His “Untitled Anthropometry (ANT118)” (main picture; circa 1960) presents a blue corporeal form suspended within a pale void. The painting is a large scale example of Klein’s “Anthropométries” series. The artist’s signature International Klein Blue (IKB) pigment traces the human form in these works. “Anthropometry (ANT118)” belongs to a subset of “Anthropométries” in which the human form appears caught in a transcendental act of levitation. The painting is expected to fetch between £8 and £14 million ($11,648,000 – $20,384,000).

For more information on the Post-War and Contemporary evening and day auctions, visit Christie’s official website.