Most Expensive Book in the World

Most Expensive Book ever - Leonardo Da Vinci's notes & writings. Photo Courtesy :

Most Expensive Book In The World, more valuable than any diamond known to man. The only Gemstone more valuable than this book is the mysterious Midnight Ruby which was up for auction for $40 Million in the 1980s.

This book was auctioned for $ 30.8 million in 1994, by the auction house Christies 

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