Prize fighters can make big money. Just look at Floyd Mayweather, the boxer consistently rated among the highest-paid athletes in the world – and who likes to spend his millions on extremely high-end exotic supercars.

The champ has been known to buy seven-figure hypercars – often two at a time – whether they’re Bugattis or LaFerraris. But back in 2010, it was all about the Koenigsegg you see here.

One of only three planned (but two reportedly made), this CCXR Trevita is said to have cost Mayweather nearly $5 million. The ultra-exclusive Trevita bridged the gap between the CCX and the Agera that followed. It packs at its heart a 4.8-liter twin-supercharged V8 rated at 1,018 horsepower (on E85 bio-ethanol), wrapped in bodywork crafted from a unique diamond-weave carbon fiber that makes it shimmer in the sunlight. The rest of the specs will be familiar to any other Koenigsegg, from the removable rooftop to the carbon-ceramic brakes.

Following Mayweather’s sale of the high-end exotic, it became part of the Ash Crest Collection, which we gather is owned by the same people behind the Indiana-based private equity investment firm of the same name. But now it’s going up for auction, with a mileage reading 1947 – which just so happens, incidentally, to be the year that Ferrari was founded. You can bet it’ll fetch several million dollars when Mecum drops the hammer at the Hyatt Regency Monterey Hotel during the Pebble Beach Concours d’Elegance, where the nation’s (if not the world’s) leading exotic-car collectors will be gathered to swap some of the rarest, most expensive automobiles ever crafted.

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