Somewhere in a private collection right now sits a Formula 1 helmet with the shell integrity of a gravel driveway, and someone just paid $837,500 for the privilege of owning it. That's not a typo, and it's not a joke about collector psychology gone wrong.

Source: [Yahoo Sports](https://sports.yahoo.com/articles/sennas-battle-scarred-1992-shoei-120000496.html)

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