10 most expensive books in the world

Flavorwire posted an article on the 10 Most Expensive Books in the World.   One of the books was auctioned at Christie's on January 20th.

"It could be a record-breaking afternoon in the book world. Today, Christie’s New York will auction off a copy of John James Audubon’s Birds of America, which already holds the title of most valuable printed book in the world, having sold for about $11.5 million in 2010. In fact, according to The Economist, a true list of the ten most valuable single books ever sold would have to include five copies of The Birds of America. Though Christie’s is playing their cards close to the vest and estimating a $7 to $10 million sale, today could see a new record for the book. After all, the copy that sold for $11.5 million was estimated at less than the copy on auction today."

The book sold for $7.9 million!!  The Huffington Report gave some details of the book:  "The 3 1/2-foot-tall books feature hand-colored prints of all the species known to Audubon in early 19th-century North America. Audubon insisted on the book's large format – printed on the largest handmade sheets available at the time – because of his desire to portray the birds in their actual size and natural habitat."