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Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 3945

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 3945

Sold Out

 

Patek Philippe Yellow Gold Calatrava Watch Ref. 570

Patek Philippe Yellow Gold Calatrava Watch Ref. 570

Sold Out

 

Patek Philippe White Gold Back Wind Golden Ellipse Ref. 3586

Patek Philippe White Gold Back Wind Golden Ellipse Ref. 3586

Sold Out

 
Patek Philippe White Gold Perpetual Calendar Chronograph Watch Ref. 5020

Patek Philippe White Gold Perpetual Calendar Chronograph Watch Ref. 5020

Patek Philippe White Gold Perpetual Calendar Chronograph Watch Ref. 5020

"Price upon request"
 

Patek Philippe Rose Gold Annual Calendar Ref. 5035, One of 100 Made for AC Milan

Patek Philippe Rose Gold Annual Calendar Ref. 5035, One of 100 Made for AC Milan

Sold Out

 
Patek Philippe - Patek Philippe Platinum Calatrava Ref. 5196 - The Keystone Watches

Patek Philippe Platinum Calatrava Ref. 5196

Patek Philippe Platinum Calatrava Ref. 5196

Sold Out

 

Patek Philippe White Gold Calatrava Ref. 3919

Patek Philippe White Gold Calatrava Ref. 3919

Sold Out

 

Patek Philippe Yellow Gold Watch Ref. 3567

Patek Philippe Yellow Gold Watch Ref. 3567

Sold Out

 

Patek Philippe White Gold Chronograph Ref. 5170G

Patek Philippe White Gold Chronograph Ref. 5170G

Sold Out

 

Patek White Gold Golden Ellipse Watch Ref. 3594

Patek White Gold Golden Ellipse Watch Ref. 3594

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Diamond & Sapphire Watch Ref. 4665 - The Keystone Watches

Patek Philippe Yellow Gold Diamond & Sapphire Watch Ref. 4665

Patek Philippe Yellow Gold Diamond & Sapphire Watch Ref. 4665

Sold Out

 

Patek Philippe White Gold World Time Ref. 5110

Patek Philippe White Gold World Time Ref. 5110

Sold Out

 

Patek Philippe Yellow Gold Calarava Ref. 3919

Patek Philippe Yellow Gold Calarava Ref. 3919

Sold Out

 

Patek Philippe Yellow Gold Automatic Watch Ref. 3861

Patek Philippe Yellow Gold Automatic Watch Ref. 3861

Sold Out

 

Patek Philippe Platinum Annual Calendar Chronograph Watch Ref. 5960

Patek Philippe Platinum Annual Calendar Chronograph Watch Ref. 5960

Sold Out

 

Patek Philippe White Gold Ellipse Ref. 3548

Patek Philippe White Gold Ellipse Ref. 3548

Sold Out

 

Patek Philippe Yellow Gold Golden Ellipse Mechanical Watch Ref. 3583

Patek Philippe Yellow Gold Golden Ellipse Mechanical Watch Ref. 3583

Sold Out

 

Patek Philippe Yellow Gold Ellipse Watch Ref. 3948

Patek Philippe Yellow Gold Ellipse Watch Ref. 3948

Sold Out

 

Patek Philippe Yellow Gold Calatrava Ref. 3919 on Rare Chain Link Bracelet

Patek Philippe Yellow Gold Calatrava Ref. 3919 on Rare Chain Link Bracelet

Sold Out

 

Patek Philippe Yellow Gold Calatrava Ref. 3558

Patek Philippe Yellow Gold Calatrava Ref. 3558

Sold Out

 

Patek Philippe Steel Nautilus Ref. 3800

Patek Philippe Steel Nautilus Ref. 3800

Sold Out

 

Patek Philippe Yellow Gold Ellipse Watch Ref. 3987

Patek Philippe Yellow Gold Ellipse Watch Ref. 3987

Sold Out

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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 White Gold Rectangular Watch with Lapis Watch (New Arrival)

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
Shop all New Arrivals Preview

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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.

Stay in touch.

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