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Patek Philippe White Gold Perpetual Calendar Chronograph Diamond Watch Ref. 5021, Likely Unique

Patek Philippe White Gold Perpetual Calendar Chronograph Diamond Watch Ref. 5021, Likely Unique

Patek Philippe White Gold Perpetual Calendar Chronograph Diamond Watch Ref. 5021, Likely Unique

$600,000 USD
 
Vacheron Constantin Yellow Gold Chronograph Watch Ref. 4178 with Important Provenance (New Arrival)

Vacheron Constantin Yellow Gold Chronograph Watch Ref. 4178 with Important Provenance (New Arrival)

Vacheron Constantin Yellow Gold Chronograph Watch Ref. 4178 with Important Provenance (New Arrival)

$60,000 USD
 
Patek Philippe Yellow Gold Chronograph Ref. 1579, Retailed by Somazzi

Patek Philippe Yellow Gold Chronograph Ref. 1579, Retailed by Somazzi

Patek Philippe Yellow Gold Chronograph Ref. 1579, Retailed by Somazzi

$150,000 USD
 
Patek Philippe Rose Gold Fagiolino Chronograph Ref. 591 retailed by Walser Wald (Private Sale)

Patek Philippe Rose Gold Fagiolino Chronograph Ref. 591 retailed by Walser Wald (Private Sale)

Patek Philippe Rose Gold Fagiolino Chronograph Ref. 591 retailed by Walser Wald (Private Sale)

$225,000 USD
 
Patek Philippe Yellow Gold Chronograph Watch Ref. 591, Incredible Original Condition

Patek Philippe Yellow Gold Chronograph Watch Ref. 591, Incredible Original Condition

Patek Philippe Yellow Gold Chronograph Watch Ref. 591, Incredible Original Condition

$165,000 USD
 
Cartier Rose Gold Rotonde Chronograph Ref. 2955 (New Arrival)

Cartier Rose Gold Rotonde Chronograph Ref. 2955 (New Arrival)

Cartier Rose Gold Rotonde Chronograph Ref. 2955 (New Arrival)

$18,500 USD
 
Vacheron Constantin Steel Chronograph Watch Ref. 4072, Circa 1943

Vacheron Constantin Steel Chronograph Watch Ref. 4072, Circa 1943

Vacheron Constantin Steel Chronograph Watch Ref. 4072, Circa 1943

$295,000 USD
 
Patek Philippe Platinum Split Seconds Chronograph Watch Ref. 5951P

Patek Philippe Platinum Split Seconds Chronograph Watch Ref. 5951P

Patek Philippe Platinum Split Seconds Chronograph Watch Ref. 5951P

$450,000 USD
 
Patek Philippe Yellow Gold Chronograph Watch Ref. 1506, Circa 1942

Patek Philippe Yellow Gold Chronograph Watch Ref. 1506, Circa 1942

Patek Philippe Yellow Gold Chronograph Watch Ref. 1506, Circa 1942

$450,000 USD
 
Patek Philippe Yellow Gold Chronograph Two-Tone Dial Watch Ref. 1463

Patek Philippe Yellow Gold Chronograph Two-Tone Dial Watch Ref. 1463

Patek Philippe Yellow Gold Chronograph Two-Tone Dial Watch Ref. 1463

$300,000 USD
 
Rolex Pink Gold Chronograph Watch Ref. 4062

Rolex Pink Gold Chronograph Watch Ref. 4062

Rolex Pink Gold Chronograph Watch Ref. 4062

$54,000 USD
 
Audemars Piguet White Gold Royal Oak Chronograph Ref. 25978

Audemars Piguet White Gold Royal Oak Chronograph Ref. 25978

Audemars Piguet White Gold Royal Oak Chronograph Ref. 25978

$165,000 USD
New Arrivals Preview
 
Rolex Yellow Gold Queen Midas Watch Ref. 4314 with Lapis and Diamond Dial (New Arrival)

Rolex Yellow Gold Queen Midas Watch Ref. 4314 with Lapis and Diamond Dial (New Arrival)

Rolex Yellow Gold Queen Midas Watch Ref. 4314 with Lapis and Diamond Dial (New Arrival)

$38,000 USD
 
Patek Philippe White Gold Baguette Diamond Watch Ref. 3540 (New Arrival)

Patek Philippe White Gold Baguette Diamond Watch Ref. 3540 (New Arrival)

Patek Philippe White Gold Baguette Diamond Watch Ref. 3540 (New Arrival)

$30,000 USD
 
Vacheron Constantin Yellow Gold Chronograph Watch Ref. 4178 with Important Provenance (New Arrival)

Vacheron Constantin Yellow Gold Chronograph Watch Ref. 4178 with Important Provenance (New Arrival)

Vacheron Constantin Yellow Gold Chronograph Watch Ref. 4178 with Important Provenance (New Arrival)

$60,000 USD
 
Breguet Cushion Shaped Diver 200m Watch (New Arrival)

Breguet Cushion Shaped Diver 200m Watch (New Arrival)

Breguet Cushion Shaped Diver 200m Watch (New Arrival)

$58,000 USD
 
Audemars Piguet - Audemars Piguet White Gold Rectangular Watch with Lapis Watch (New Arrival) - The Keystone Watches

Audemars Piguet White Gold Rectangular Watch with Lapis Watch (New Arrival)

Audemars Piguet White Gold Rectangular Watch with Lapis Watch (New Arrival)

$18,000 USD
 
Cartier Yellow Gold Tank Normale Bracelet Watch  Ref. 78092 (New Arrival)

Cartier Yellow Gold Tank Normale Bracelet Watch Ref. 78092 (New Arrival)

Cartier Yellow Gold Tank Normale Bracelet Watch Ref. 78092 (New Arrival)

$36,000 USD
 
Cartier - Cartier Yellow Gold Tank Reverso (New Arrival) - The Keystone Watches

Cartier Yellow Gold Tank Reverso (New Arrival)

Cartier Yellow Gold Tank Reverso (New Arrival)

$34,500 USD
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Guarantee

Our watches go through a rigorous authentication process in which seasoned experts examine and evaluate the watches. These experts have decades of experience and have authenticated thousands of watches in their lifetime. We guarantee every piece of the watches we offer are 100% authentic. 

CONTACT US

You can reach us by emailing hello@thekeystone.com or call 213-632-9061

We are based in West Hollywood, CA. Please contact us for appointments to view a watch in person. 

We are not authorized sellers of the brands listed on our site. We sell vintage and pre-owned product.

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