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Geplaatst op 04-05-2026
Is the Patek Philippe Grandmaster Chime 6300A the rarest watch ever made? If we consider publicly known wristwatches with official documentation and auction history, this unique steel masterpiece from Patek Philippe is one of the strongest contenders for that title.
Some watches are rare because only a few were ever made. Think of a limited edition of 500 pieces, or a vintage Rolex that almost never turns up in its original condition. But there is an even higher category: the watch of which literally only one example exists.
The rarest publicly known wristwatch ever is probably the Patek Philippe Grandmaster Chime 6300A, created for Only Watch 2019. This is no ordinary Grandmaster Chime, but the only stainless steel version ever produced.
Rarity is a broad concept in the watch world. A watch can be rare due to low production numbers, materials, condition, provenance or technical complexity. There are also unique pocket watches, such as the Vacheron Constantin Berkley Grand Complication. This is a unique masterpiece with 63 complications and is presented by Vacheron Constantin as the most complicated watch in the world.
If we look specifically at the rarest wristwatch that is publicly known, officially documented and has appeared on the market, the Patek Philippe Grandmaster Chime 6300A comes out on top. Not only because the watch is extremely expensive, but above all because it represents a unique combination of brand, complication, materials and auction history.
Photo: Patek Philippe
The Grandmaster Chime is one of Patek Philippe’s most impressive creations. The current Grandmaster Chime line features 20 complications, including five acoustic functions. Patek Philippe calls it its most complicated wristwatch.
A complication is a function on a watch that goes beyond simply displaying hours, minutes and seconds. Examples include a perpetual calendar, a second time zone, a moon phase or a minute repeater. In the case of an acoustic complication, the watch conveys information through sound, for example by chiming the time.
The 6300A for Only Watch went a step further than the standard versions. Normally, this type of haute horlogerie is mainly produced in precious metals. Patek Philippe, however, opted for stainless steel, a material that is often particularly sought after by collectors of this brand because, historically, it is much less common in watches with grand complications.
That single detail transformed the 6300A from an extremely complex watch into a unique collector’s item.
The Patek Philippe Grandmaster Chime 6300A has a reversible case with two dials. On one side, you see the time and the acoustic functions. On the other side, you’ll find calendar information, amongst other things.
This design is not only spectacular but also functional. In a watch with so many technical capabilities, the information must remain legible. Two dials give Patek Philippe the space to logically organise the many functions.
The Grandmaster Chime is therefore not merely built to tell the time. Above all, this watch demonstrates what mechanical watchmaking is capable of. It is not just another luxury watch, but a technical masterpiece on your wrist.
On 9 November 2019, the Patek Philippe Grandmaster Chime 6300A was sold at Only Watch at Christie’s in Geneva. The hammer price was 31 million Swiss francs.
Guinness World Records has recognised this as the most expensive wristwatch, and indeed the most expensive watch in general, ever sold at auction. That figure does not tell the whole story, but it does confirm just how exceptional this watch is.
The proceeds went to Only Watch, a charity auction for research into Duchenne muscular dystrophy. So it was not just about prestige, but also about a special auction moment where collectors knew that this piece would never be made again.
Steel is very common with many watch brands. At Patek Philippe, the situation is different, particularly when it comes to grand complications. The most exclusive models are usually crafted in gold or platinum.
A complex Patek Philippe in steel is therefore particularly interesting to collectors. That is what makes the Grandmaster Chime 6300A so special. The watch combines Patek Philippe’s technical excellence with a material that is rare within this segment.
It is precisely this combination that gives this model its almost legendary status. It is not only a remarkable Patek Philippe watch, but also one of the most talked-about examples of how the choice of material can hugely influence a watch’s collectible value.
Photo: Patek Philippe
Anyone delving into rare watches will soon come across the Patek Philippe 1518 in stainless steel. That model is legendary. The 1518 was the first mass-produced perpetual calendar chronograph wristwatch.
A chronograph is a watch with a stopwatch function. A perpetual calendar automatically accounts for months of varying lengths and leap years. The combination of these functions made the Patek Philippe 1518 historically very significant.
Only four steel examples are publicly known to exist. Yet four is not one. The steel 1518 may be the rarest production model in the world of vintage Patek Philippe, but the Grandmaster Chime 6300A is an officially unique piece.
That is why the 6300A wins out when we take the concept of rarity strictly.
There are also unique pocket watches that deserve a prominent place in this story. A good example is the Vacheron Constantin Berkley Grand Complication. This watch has 63 complications and is presented by Vacheron Constantin as the most complicated watch in the world.
Nevertheless, we are deliberately focusing mainly on wristwatches here. Pocket watches and wristwatches have a different history, a different function and often a different collector’s market.
When we look specifically at well-known wristwatches, the Patek Philippe Grandmaster Chime 6300A remains the strongest contender for the title of rarest watch ever.
The Patek Philippe Grandmaster Chime 6300A is rare in a way that is almost impossible to surpass. One example. One steel version. One auction moment. One buyer.
Behind it all stands Patek Philippe, the brand that has been regarded as the benchmark for classic haute horlogerie for generations. For enthusiasts, this watch is particularly fascinating because it demonstrates that rarity is not just about scarcity.
It is also about significance. A limited-edition watch may be beautiful, but a unique watch with 20 complications, a steel case and a world record to its name has an almost mythical status.
Identifying the rarest watch ever is only possible if you clarify what you mean. If you include all mechanical timepieces, there are unique pocket watches such as the Vacheron Constantin Berkley Grand Complication. If you look at the rarest publicly known wristwatch with official documentation and auction history, the Patek Philippe Grandmaster Chime 6300A is the strongest candidate. That makes this watch perhaps the ultimate collector’s dream piece: not because you’ll ever come across it by chance, but precisely because you’ll probably never see it again.
Want to read more about exceptional, exclusive and extremely expensive watches? Then take a look at our blog on the world’s most expensive watch, in which we examine extreme auction prices and famous models, amongst other things. If you’d like to know more about the absolute pinnacle of the watch world, read about the best watches in the world and our blog on the best watch brands. If, on the other hand, you’re curious about watches you can actually find at WatchXL, then ‘exclusive watches for the true enthusiast’ is a great next step.
