The simple helmet, but with every living F1 champion's autograph, is getting auctioned to raise funds for 4 kids charities

Beginning in late 2007, the first to sign was Phil Hill, then Jacques Villeneuve, Emerson Fittipaldi, and Mario Andretti.

By mid-December, in a quick trip to London, Sir Jackie Stewart, Damon Hill, and John Surtees.

In January of 2008, Alain Prost and Fernando Alonso in Paris and Jody Scheckter in rural England.

In February Nigel Mansell’s autograph.

Within 12 days in April, Michael Schumacher in Toronto, and Niki Lauda in Vienna.

Keke Rosberg, Mika Hakkinen, and Kimi Raikkonen in Monte Carlo. Later that summer, Alan Jones in California and shipped the helmet to Sir Jack Brabham in Australia.

In December of 2008, Lewis Hamilton in London and Piquet in Brasilia.

Jenson Button and Sebastian Vettel in London in December of 2010.

All this effort was by Al Pearce who writes for Autoweek magazine, and the auction will be in Monaco next month,  http://www.rmsothebys.com/MC16/MONACO/LOTS/FORMULA-1-CHAMPIONS-SIGNED-HELMET/1078682

100 percent of the proceeds to benefit the following charities:
Victory Junction Gang
Camp Kyle Petty Charity Ride Across America
 Jeff Gordon Children’s Foundation
 Jimmie Johnson Foundation

https://www.yahoo.com/autos/greatest-helmet-ever-120000332.html