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Piaget - Piaget White Gold, Lapis and Diamond Watch Ref. 9706 - The Keystone Watches

Piaget White Gold, Lapis and Diamond Watch Ref. 9706

Piaget White Gold, Lapis and Diamond Watch Ref. 9706

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A. Lange & Sohne - A. Lange & Sohne White Gold Langematik Sax-O-Mat Ref. 301.027 - The Keystone Watches

A. Lange & Sohne White Gold Langematik Sax-O-Mat Ref. 301.027

A. Lange & Sohne White Gold Langematik Sax-O-Mat Ref. 301.027

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Patek Philippe - Patek Philippe White Gold Perpetual Engraved Ref. 5160 - The Keystone Watches

Patek Philippe White Gold Perpetual Engraved Ref. 5160

Patek Philippe White Gold Perpetual Engraved Ref. 5160

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Piaget - Piaget White Gold Rubelite Diamond Watch Ref. 9804 - The Keystone Watches

Piaget White Gold Rubelite Diamond Watch Ref. 9804

Piaget White Gold Rubelite Diamond Watch Ref. 9804

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Vacheron Constantin - Vacheron Constantin White Gold Royal Chronometer Automatic Watch Ref. 6694 - The Keystone Watches

Vacheron Constantin White Gold Royal Chronometer Automatic Watch Ref. 6694

Vacheron Constantin White Gold Royal Chronometer Automatic Watch Ref. 6694

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Rolex - Rolex Platinum Day-Date Baguette Diamond Watch Ref. 18366 with Bucherer Warranty - The Keystone Watches

Rolex Platinum Day-Date Baguette Diamond Watch Ref. 18366 with Bucherer Warranty

Rolex Platinum Day-Date Baguette Diamond Watch Ref. 18366 with Bucherer Warranty

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Rolex - Rolex Steel Submariner Ref. 168000 with Spider Dial - The Keystone Watches

Rolex Steel Submariner Ref. 168000 with Spider Dial

Rolex Steel Submariner Ref. 168000 with Spider Dial

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Patek Philippe - Patek Philippe White Gold Automatic Backwind Golden Circle Watch Ref. 3586 - The Keystone Watches

Patek Philippe White Gold Automatic Backwind Golden Circle Watch Ref. 3586

Patek Philippe White Gold Automatic Backwind Golden Circle Watch Ref. 3586

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Rolex - Rolex Yellow Gold Day-Date Ref. 1803 - The Keystone Watches

Rolex Yellow Gold Day-Date Ref. 1803

Rolex Yellow Gold Day-Date Ref. 1803

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Cartier - Cartier Yellow Gold Tank Cintree Watch Ref. 4123 - The Keystone Watches

Cartier Yellow Gold Tank Cintree Watch Ref. 4123

Cartier Yellow Gold Tank Cintree Watch Ref. 4123

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5374 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5374

Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5374

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

Rolex Steel Zenith Daytona Chronograph Ref. 16520 with Original Warranty

Rolex Steel Zenith Daytona Chronograph Ref. 16520 with Original Warranty

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

Rolex Steel Zenith Daytona Chronograph Ref. 16520 with Original Warranty

Rolex Steel Zenith Daytona Chronograph Ref. 16520 with Original Warranty

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Audemars Piguet - Audemars Piguet Yellow Gold Royal Oak Ref. 15450 - The Keystone Watches

Audemars Piguet Yellow Gold Royal Oak Ref. 15450

Audemars Piguet Yellow Gold Royal Oak Ref. 15450

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Cartier - Cartier Yellow Gold Tank Cintree Watch - The Keystone Watches

Cartier Yellow Gold Tank Cintree Watch

Cartier Yellow Gold Tank Cintree Watch

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Patek Philippe - Patek Philippe Yellow Gold World Time Watch Ref. 5110 - The Keystone Watches

Patek Philippe Yellow Gold World Time Watch Ref. 5110

Patek Philippe Yellow Gold World Time Watch Ref. 5110

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Tourbillon Watch Ref. 5016 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Tourbillon Watch Ref. 5016

Patek Philippe Platinum Perpetual Calendar Tourbillon Watch Ref. 5016

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Audemars Piguet - Audemars Piguet Yellow Gold Bracelet Watch - The Keystone Watches

Audemars Piguet Yellow Gold Bracelet Watch

Audemars Piguet Yellow Gold Bracelet Watch

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Patek Philippe - Patek Philippe Yellow Gold Calatrava Watch Ref. 5000 - The Keystone Watches

Patek Philippe Yellow Gold Calatrava Watch Ref. 5000

Patek Philippe Yellow Gold Calatrava Watch Ref. 5000

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Audemars Piguet - Audemars Piguet White Gold and Diamond Watch - The Keystone Watches

Audemars Piguet White Gold and Diamond Watch

Audemars Piguet White Gold and Diamond Watch

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FP Journe - F.P Journe Platinum Ruthenium Edition Tourbillon, Edition of 99 Pieces - The Keystone Watches

F.P Journe Platinum Ruthenium Edition Tourbillon, Edition of 99 Pieces

F.P Journe Platinum Ruthenium Edition Tourbillon, Edition of 99 Pieces

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Audemars Piguet - Audemars Piguet Two-Tone Automatic Bracelet Watch - The Keystone Watches

Audemars Piguet Two-Tone Automatic Bracelet Watch

Audemars Piguet Two-Tone Automatic Bracelet Watch

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New Arrivals Preview
 
Cartier Tank Coussin Bamboo Ref. 78102 (New Arrival)

Cartier Tank Coussin Bamboo Ref. 78102 (New Arrival)

Cartier Tank Coussin Bamboo Ref. 78102 (New Arrival)

$125,000 USD
 
Cartier Tank Allongee Elongated, Circa 1940 (New Arrival)

Cartier Tank Allongee Elongated, Circa 1940 (New Arrival)

Cartier Tank Allongee Elongated, Circa 1940 (New Arrival)

$62,000 USD
 
Patek Philippe White Gold Rectangular Art Deco Watch (New Arrival)

Patek Philippe White Gold Rectangular Art Deco Watch (New Arrival)

Patek Philippe White Gold Rectangular Art Deco Watch (New Arrival)

$55,000 USD
 
Cartier Platinum Tank Watch Ref. 16111 (New Arrival)

Cartier Platinum Tank Watch Ref. 16111 (New Arrival)

Cartier Platinum Tank Watch Ref. 16111 (New Arrival)

$21,000 USD
 
Patek Philippe Yellow Gold Chronograph Watch Ref. 591, Incredible Original Condition (New Arrival)

Patek Philippe Yellow Gold Chronograph Watch Ref. 591, Incredible Original Condition (New Arrival)

Patek Philippe Yellow Gold Chronograph Watch Ref. 591, Incredible Original Condition (New Arrival)

$175,000 USD
 
Patek Philippe Yellow Gold Enamel Dial Calatrava Watch Ref. 2526 (New Arrival)

Patek Philippe Yellow Gold Enamel Dial Calatrava Watch Ref. 2526 (New Arrival)

Patek Philippe Yellow Gold Enamel Dial Calatrava Watch Ref. 2526 (New Arrival)

$70,000 USD
 
Piaget Yellow Gold Lapis Lazuli & Jade Cuff Watch (New Arrivals)

Piaget Yellow Gold Lapis Lazuli & Jade Cuff Watch (New Arrivals)

Piaget Yellow Gold Lapis Lazuli & Jade Cuff Watch (New Arrivals)

$48,000 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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