I bought it at an auction in 2011.  Unique with many Motogp legends.

Description: Full size white helmet has been signed during the 2011 season by all riders including:Casey Stoner, Jorge Lorenzo, Dani Pedrosa, Andrea Dovizioso, Marco Simoncelli, Ben Spies, Valentino Rossi, Colin Edwards, Nicky Hayden, Hiroshi Aoyama, Cal Crutchlow, Hector Barbera, Karel Abraham, Toni Elias, Loris Capirossi, Randy De Punet Item has been signed in person by above named person(s). This is a hand signed item and is in no way a print or copy. Item is guaranteed to be as described with a money back guarantee.

Look my other Auktion