A rare copy of the "most expensive book in the world" surpassed pre-sale estimates to fetch more than £7 million ( $10 million) at auction in London.
Sotheby's said the price of £7,321,250, including buyer's premium, paid for John James Audubon's Birds Of America was a record for any printed book at auction.
The illustrated book by the renowned ornithologist, naturalist and painter (1785-1851), a landmark of natural history, was expected to fetch between £4 million and £6 million, The Press Association reports.
"Birds of America" is oversize - more than 3 feet tall and 2 feet wide - with 435 illustrations. When first published in 1827, the images were printed in black and white and then hand-colored by specialists.
The combination of accuracy and artistry make Audubon's work unique, Los Angeles Times informs.
U.S. Justice Department is acting behind the scenes to have Assange extradicted from the Ecuadorean Embassy in London, and prosecuted in the U.S.