Auctioned by Christie’s in London for £22.6 million (S$41.7 million).

Six Self Portraits by Andy Warhol

Completed just months before Andy Warhol’s sudden death in 1987, this work is considered a rare masterpiece and one of his last great artistic gestures. Six distinct variations of his iconic 1986 ‘fright wig’ self-portrait create a unique sequence that takes on the grand tradition of self-depiction in an unprecedented manner. The stark, rarefied exposures of the artist are thought to represent Warhol’s most deeply personal revelations. www.christies.com