1 Codex Leicester by Leonardo da Vinci - $30.8 million: This manuscript was written by the famous polymath Leonardo da Vinci between 1506 and 1510, and contains his scientific and artistic musings.
2 The Gospels of Henry the Lion - $11.7 million: Created in the 12th century, this manuscript contains illuminated illustrations and religious texts, and is considered a masterpiece of medieval bookmaking.
3 Birds of America by James Audubon - $11.5 million: This book is a collection of hand-colored illustrations of American birds, created by naturalist James Audubon in the 19th century.
4 The Canterbury Tales by Geoffrey Chaucer - $7.5 million: Printed in 1477, this book is considered a masterpiece of English literature and a rare example of early printing.
5 The Tales of Beedle the Bard by J.K. Rowling - $3.98 million: This book is a rare edition of a fictional book from the Harry Potter series, with only 7 copies in existence.
6 The Gutenberg Bible - $30 - $100 million: Printed in the 15th century, this book is considered one of the most important and influential works in the history of printing.
7 The Magna Carta - Priceless: This document is considered a cornerstone of modern democracy, establishing the principle that everyone is subject to the law, including the king.