World's Most Expensive Pen: Mystery Masterpiece Pen.
You're looking at the Limited Edition Mystery Masterpiece pen, the result of a collaboration between Montblanc and Van Cleef & Arpels. To celebrate their centennials in 2006, the two companies made a total of nine pe...
https://www.neatorama.com/2007/02/10/worlds-most-expensive-pen-mystery-masterpiece-pen/