For the eighth edition of the Only Watch charity auction, Patek Philippe will donate a new and exceptionally unique timepiece: the first and only Grandmaster Chime in steel – a very rare metal in the Genevan manufacture’s collection and particularly uncommon for a grand complication.
 

Launched in 2014 on the occasion of the company’s 175th anniversary, the Grandmaster Chime became part of the manufacture’s regular collection in a white-gold version in 2016. The most complex Patek Philippe wristwatch features 20 complications, including five acoustic functions, two of which are patented global premières: an alarm that strikes the preprogrammed alarm time and a date repeater that sounds the date on demand. The double-face case with the guilloched hobnail pattern is endowed with a patented reversing mechanism.
 

Apart from its steel case, the Ref. 6300A-010 Grandmaster Chime, created explicitly for Only Watch 2019, stands out with its rose-gold and ebony-black dials as well as the inscription “The Only One” on the subsidiary alarm time dial at 12 o'clock, a further hallmark of its exclusivity.
 

This year, the biennial Only Watch auction will take place in Geneva on November 9, 2019. With the seven auctions that have taken place so far, the Monaco Association against Duchenne Muscular Dystrophy (Association Monégasque contre les Myopathies AMM) has already raised 40 million Swiss francs in funds. The proceeds finance research in the field of Duchenne Muscular Dystrophy, a degenerative neuromuscular disease that befalls one in 3500 children, adolescents, and young adults around the world.