Graham is a historic British brand that was relaunched by the Swiss company currently known as Graham London, and named after the renown 18th century British watchmaker George Graham. A unique blend of Swiss watchmaking and British heritage, Graham is known for their focus on racing-inspired left-handed chronographs, many of which sport a large crown guard/trigger mechanism.
Brawn GP
Graham was notably the official timing partner of Brawn GP, enjoying the ride as the ex-Honda F1 team took unprecedented Constructors and Drivers Championships in their first and only year of existence with drivers Rubens Barrichello and Jenson Button. Such an achievement will unlikely ever be repeated, and Graham launched the Brawn GP Collection to commemorate the historic feat. A total of eight different Brawn GP editions were made including the Chronofighter and Silverstone Trackmaster models, with some coming with either a black or white dial.
Mercedes-AMG Petronas F1
Graham then stayed on as a timing partner when Brawn GP became the Mercedes-AMG Petronas F1 team the following season, putting the iconic German marque back on the Formula One grid as a factory team for the first time in 55 years. Graham remained with Mercedes through the end of the 2011 Formula One season before being replaced by Thomas Sabo, which was then replaced by IWC Schaffhausen the season after. For much of this time frame, Graham also served as the official timing partner of the Isle of Man TT.
References
https://www.watch-wiki.net/doku.php?id=graham
https://www.horologii.com/watch-brands/graham-watches/graham-of-london/
https://www.sub5zero.com/graham-london-brawn-gp-limited-edition-formula-1-watches/
https://www.autoblog.com/2009/10/07/graham-prix-brawn-gp-finally-gets-its-own-watch-line-and-it/
https://www.christies.com/en/lot/lot-5935210
https://www.watchfinder.ch/Graham/Trackmaster/2BRYO.B05A.K66N/52627/item/202205
https://masterhorologer.com/2010/07/09/graham-london-mercedes-gp-trackmaster-automatic-bi-compax-chronograph-47mm-steel-case-black-carbon-dial-or-silver-dial/
https://www.fashion.at/collections/2013/thomassabo9-2013.htm