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Patek Philippe - Patek Philippe White Gold Calatrava Ref. 570 - The Keystone Watches

Patek Philippe White Gold Calatrava Ref. 570

Patek Philippe White Gold Calatrava Ref. 570

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Rolex - Rolex Platinum Cosmograph Daytona Diamond Watch Ref. 116576 - The Keystone Watches

Rolex Platinum Cosmograph Daytona Diamond Watch Ref. 116576

Rolex Platinum Cosmograph Daytona Diamond Watch Ref. 116576

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Patek Philippe - Patek Philippe Platinum Split Seconds Monopusher Ref. 5370 - The Keystone Watches

Patek Philippe Platinum Split Seconds Monopusher Ref. 5370

Patek Philippe Platinum Split Seconds Monopusher Ref. 5370

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Patek Philippe - Patek Philippe Nautilus Power Reserve Watch Ref. 3710 with Original Box and Papers - The Keystone Watches

Patek Philippe Nautilus Power Reserve Watch Ref. 3710 with Original Box and Papers

Patek Philippe Nautilus Power Reserve Watch Ref. 3710 with Original Box and Papers

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Rolex - Rolex Yellow Gold Zenith Daytona MOP, Ref. 16518 - The Keystone Watches

Rolex Yellow Gold Zenith Daytona MOP, Ref. 16518

Rolex Yellow Gold Zenith Daytona MOP, Ref. 16518

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Rolex - Rolex White Gold Daytona Ref. 116519 with Sodalite Dial, Box and Papers - The Keystone Watches

Rolex White Gold Daytona Ref. 116519 with Sodalite Dial, Box and Papers

Rolex White Gold Daytona Ref. 116519 with Sodalite Dial, Box and Papers

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Patek Philippe - Patek Philippe White Gold Backwind Calatrava Ref. 3569 - The Keystone Watches

Patek Philippe White Gold Backwind Calatrava Ref. 3569

Patek Philippe White Gold Backwind Calatrava Ref. 3569

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Rolex - Rolex White and Yellow Gold Cellini Ref. 4150 - The Keystone Watches

Rolex White and Yellow Gold Cellini Ref. 4150

Rolex White and Yellow Gold Cellini Ref. 4150

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Cartier - Cartier Paris Yellow Gold Tonneau Mechanical Watch - The Keystone Watches

Cartier Paris Yellow Gold Tonneau Mechanical Watch

Cartier Paris Yellow Gold Tonneau Mechanical Watch

Sold Out

 
Cartier - Cartier Skeleton Tourbillon Rotonde De Cartier Astromysterieux - The Keystone Watches

Cartier Skeleton Tourbillon Rotonde De Cartier Astromysterieux

Cartier Skeleton Tourbillon Rotonde De Cartier Astromysterieux

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Patek Philippe - Patek Philippe Yellow Gold Enamel Engraved Pocket Watch from 1921 - The Keystone Watches

Patek Philippe Yellow Gold Enamel Engraved Pocket Watch from 1921

Patek Philippe Yellow Gold Enamel Engraved Pocket Watch from 1921

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Rolex - Rolex Two-Tone Zenith Daytona Ref. 16523 with Champagne Dial - The Keystone Watches

Rolex Two-Tone Zenith Daytona Ref. 16523 with Champagne Dial

Rolex Two-Tone Zenith Daytona Ref. 16523 with Champagne Dial

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Rolex - Rolex Two-Tone Zenith Daytona Ref. 16523 - The Keystone Watches

Rolex Two-Tone Zenith Daytona Ref. 16523

Rolex Two-Tone Zenith Daytona Ref. 16523

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Audemars Piguet - Audemars Piguet Steel Royal Oak Ref. 14790 with Yves Klein Blue Dial - The Keystone Watches

Audemars Piguet Steel Royal Oak Ref. 14790 with Yves Klein Blue Dial

Audemars Piguet Steel Royal Oak Ref. 14790 with Yves Klein Blue Dial

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Patek Philippe - Patek Philippe Steel Nautilus Ref. 3800 with Rare Arabic Numeral Dial and Original Warranty - The Keystone Watches

Patek Philippe Steel Nautilus Ref. 3800 with Rare Arabic Numeral Dial and Original Warranty

Patek Philippe Steel Nautilus Ref. 3800 with Rare Arabic Numeral Dial and Original Warranty

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Rolex - Rolex Steel Zenith Daytona Ref 16520 with Original Warranty - The Keystone Watches

Rolex Steel Zenith Daytona Ref 16520 with Original Warranty

Rolex Steel Zenith Daytona Ref 16520 with Original Warranty

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MB&F - MB&F Rose Gold Legacy Machine One - The Keystone Watches

MB&F Rose Gold Legacy Machine One

MB&F Rose Gold Legacy Machine One

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Cartier - Cartier Yellow Gold Tank Americaine Automatic - The Keystone Watches

Cartier Yellow Gold Tank Americaine Automatic

Cartier Yellow Gold Tank Americaine Automatic

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Rolex - Rolex White Gold Day-Date Ref. 118239 - The Keystone Watches

Rolex White Gold Day-Date Ref. 118239

Rolex White Gold Day-Date Ref. 118239

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Patek Philippe Steel Aquanaut Ref. 4960 for Japan Market

Patek Philippe Steel Aquanaut Ref. 4960 for Japan Market

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Cartier - Cartier Yellow Gold Tank Paris Mechanical Watch - The Keystone Watches

Cartier Yellow Gold Tank Paris Mechanical Watch

Cartier Yellow Gold Tank Paris Mechanical Watch

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Rolex - Rolex Yellow Gold Day-Date Watch Ref. 18238, Like New Old Stock - The Keystone Watches

Rolex Yellow Gold Day-Date Watch Ref. 18238, Like New Old Stock

Rolex Yellow Gold Day-Date Watch Ref. 18238, Like New Old Stock

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New Arrivals Preview
 
Cartier Platinum Tank A Guichet Ref. WGTA0236, 2025 Edition (New Arrival)

Cartier Platinum Tank A Guichet Ref. WGTA0236, 2025 Edition (New Arrival)

Cartier Platinum Tank A Guichet Ref. WGTA0236, 2025 Edition (New Arrival)

$150,000 USD
 
Patek Philippe White Gold Calatrava Watch Ref. 4189 (New Arrival)

Patek Philippe White Gold Calatrava Watch Ref. 4189 (New Arrival)

Patek Philippe White Gold Calatrava Watch Ref. 4189 (New Arrival)

$9,800 USD
 
Rolex Yellow Gold Day-Date Watch Ref. 1803 with Claw Dial (New Arrival)

Rolex Yellow Gold Day-Date Watch Ref. 1803 with Claw Dial (New Arrival)

Rolex Yellow Gold Day-Date Watch Ref. 1803 with Claw Dial (New Arrival)

$18,750 USD
 
Boucheron - Boucheron Yellow Gold Invisible Set Sapphire Watch (New Arrival) - The Keystone Watches

Boucheron Yellow Gold Invisible Set Sapphire Watch (New Arrival)

Boucheron Yellow Gold Invisible Set Sapphire Watch (New Arrival)

$9,500 USD
 
Rolex - Rolex Yellow Gold Cellini Watch Ref. 4014/8 with Orange Dial (New Arrival) - The Keystone Watches

Rolex Yellow Gold Cellini Watch Ref. 4014/8 with Orange Dial (New Arrival)

Rolex Yellow Gold Cellini Watch Ref. 4014/8 with Orange Dial (New Arrival)

$7,500 USD
 
Rolex Steel Submariner Ref. 5513 with Pumkin Lume (New Arrival)

Rolex Steel Submariner Ref. 5513 with Pumkin Lume (New Arrival)

Rolex Steel Submariner Ref. 5513 with Pumkin Lume (New Arrival)

$15,500 USD
 
Patek Philiipe White Gold Calatrava Watch Ref. 3919 (New Arrival)

Patek Philiipe White Gold Calatrava Watch Ref. 3919 (New Arrival)

Patek Philiipe White Gold Calatrava Watch Ref. 3919 (New Arrival)

$15,000 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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