The head of the young apostle was drawn with chalk by Raphael. In 2009, a sketch by Raphael reached a transaction price of $47.6 million.
3. Three Trees is the pinnacle of Rembrandt's copperplate corroding landscape sketch. The cloudy sky at the top left of the picture has a dramatic contrast effect in his landscape painting, while the chiseled trees on the hillside are a topographic supplement to the flat Dutch rural scenery.
4. The Player is a painting by the famous French painter Paul Cézanne, which was bought by the Qatari royal family at 1895. It is the last player in Cezanne series and is also considered as the "darkest" one.
5. Vitruvian people are sketches created by Leonardo da Vinci around 1487. It is a manuscript drawn with pen and ink, with a specification of 34.4cm×25.5cm.
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Public trust. Cezanne's The Player was sold to the royal family of Qatar for $250 million.
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