John James Audubon's Birds of America: World's Most Expensive Book

Now up for bids at Sotheby's,  John James Audubon's Birds of America now dubbed the world's most expensive book. Or the priciest My Big Book of Birdies that would send any birdwatcher into an orgasmic frenzy- ornithological porn anyone? :)

Note the delicate craftsmanship, the ornate engravings and the lock on the book, the tome definitely looks mysterious. 

Only 119 copies are known to have been made, each book contains 435 hand-colored prints created from engravings of John James Audubon's illustrations. The book size measures more than 3 feet by 2 feet because Audubon wanted to ilustrate an accurate depiction of the birds life size.

John James Audubon's Birds of America is expected make around $6.2 million and $9.2million. Whoa!