The Patek Philippe Grandmaster Chime Ref. 6300A is a one-of-a-kind watch. Auctioneers at the Only Watch charity auction in Geneva were expecting it to go for up to $20 million. But the Grandmaster Chime shocked everyone when it was sold for $31 million, undoubtedly making it the most expensive watch in the world.
This title was previously held by Paul Newman’s Paul Newman Rolex Daytona, which was auctioned for $17.7 million in 2017. But if you consider pocket watches as well, the title was held by a 1920 Patek Philippe Henry Graves Jr. Supercomplication, which sold for $24-million back in 2014.
The Grandmaster Chime with the salmon dial was created especially for this auction. It’s made of stainless steel, and has front and back dials, which can be changed with reversible slugs. It has spring barrels driving 20 complications, including a grande and petite sonnerie, a minute repeater, instantaneous perpetual calendar with a four-digit year display, second time zone, day/night indicator, day/date (on both dials), month, leap-year cycle, four-digit year display and 24-hour and minute subdial.
The watch also has a chimed alarm function that strikes the time by reproducing the complete tone sequence of the minute repeater. This is the first time such a function has been integrated in a watch. It also has isolators that interrupt the flow of power, to protect it from damage caused by inadvertent manipulations.
Proceeds from the Only Watch auction will go to research on Duchenne muscular dystrophy, a genetic disorder that affects children. Since its inception in 2005, the charity has raised more than $40 million.