Brawn GP was assembled in weeks after Honda pulled its factory F1 team, using a controversial diffuser design that gave it a significant early-season advantage.
Jenson Button drove it to the 2009 Drivers' Championship in one of the most unlikely stories in F1 history.
Sotheby's sold Button's title-winning chassis in 2023 for $12.2 million.
A huge sum for a team that existed as an underdog fluke for exactly one season before being bought out and rebranded.
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