Bacon was becoming concerned with his own mortality when he painted Three Studies
A recently discovered self-portrait by Francis Bacon has sold for £3.8m at a Christie's auction in London.
The triptych, titled Three Studies, had never been seen by the public until it came to light last month.
The previous owner bought the work direct from the artist in 1982, two years after it was painted when Bacon was 71.
A sculpture by Spanish artist Eduardo Chillida was sold for £2.04m, a world auction record for the artist.
The iron work, titled Rumor de Limites VI, was created in 1960 and is considered by many to be his finest work.
The post-war and contemporary art sale made a total of £25.9m.