Favre-Leuba is auctioning one of its ultra-rugged Raider Bivouac 9000 timepieces that has been to the top of the world on the wrist of Adrian Ballinger who set a new speed record for climbing Mount Everest in 2011.
The watch is being auctioned to raise money for the Khumbu Climbing Centre that supports the indigenous Sherpa and mountain guiding community in Nepal.
The sale takes place on May 12 and is being held by Antiquorum in Geneva, with bids accepted online.
Few people on the planet could put the Favre-Leuba Raider Bivouac, with its built in altimeter, through tougher tests than mountaineer Mr Ballinger.
He has successfully completed eight summits of Mount Everest including one without supplemental oxygen. He has set superhuman speed records including conquering the mountain in only three weeks.
In 2018 he devised a new approach to climbing in the Himalayas called the Rapid Ascent System, which cuts the number of days needed for acclimatisation at altitude and cuts the duration of climbs.
The story will be told during previews for the Antiquorum auction that take place in Hong Kong, Taiwan and Geneva ahead of the sale.