1-of-1 Bugatti Chiron SS 'Le Diamant Nior' spotted in the wild and owner even has a custom Bugatti watch to go with it
Published on Dec 06, 2025 at 7:37 PM (UTC+4)
by Molly Davidson
Last updated on Dec 05, 2025 at 5:20 PM (UTC+4)
Edited by
Molly Davidson
London sees plenty of rare cars, but every now and then, something appears that resets the scale.
A Reddit post this week showed one cruising through the city.
A Bugatti so specific, even seasoned spotters had to double-check what they were looking at.
And just when everyone thought this couldn’t get more impressive, it did.
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What makes this Bugatti Chiron Super Sport a true one-off
The car is officially named Le Diamant Nior – a factory-built one-of-one commission.
The deep black finish, the gloss carbon, the jewel-like detailing… all part of a spec Bugatti signed off as a single build.
It starts life as a Chiron Super Sport, Bugatti’s long-tail 1,600hp missile, but this commission pushes it into art-piece territory.
And this flex didn’t stop at the car.
The owner, known online as @h0, has a matching Jacob & Co Bugatti SS watch – a custom-made piece built to mirror the car’s theme.
The timepiece houses a miniature W16 engine that animates like the real thing when you press the crown.
Its whole identity is built around a hypercar.
Bugatti’s bespoke universe keeps getting wilder
One-off Bugattis aren’t new, but the culture around them is getting bolder.
The brand has already delivered hyper-specific commissions like the Divo ‘Lady Bug’ and Chiron ‘Alice,’ each requiring obsessive levels of craftsmanship and months of microscopic carbon and paint work.
And the accessories follow suit.
Posts from the bugatti
community on Reddit
Jacob & Co.’s Bugatti watches have become part of that world, where the car isn’t the end of the story but the foundation for a whole aesthetic.
It’s an ownership style defined by matching sets, custom narratives, and specs no one else will ever have.
So spotting Le Diamant Nior in London is more than a rare sight – it’s a glimpse into Bugatti’s most exclusive tier, where even the wristwear is bespoke.
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Molly Davidson is a Junior Content Writer at Supercar Blondie. Based in Melbourne, she holds a double Bachelor’s degree in Arts/Law from Swinburne University and a Master’s of Writing and Publishing from RMIT. Molly has contributed to a range of magazines and journals, developing a strong interest in lifestyle and car news content. When she’s not writing, she’s spending quality time with her rescue English staffy, Boof.
