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Piaget - Piaget White Gold Diamond Onyx Watch Ref. 9066 - The Keystone Watches

Piaget White Gold Diamond Onyx Watch Ref. 9066

Piaget White Gold Diamond Onyx Watch Ref. 9066

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Piaget - Piaget White Gold Diamond Dial Ref. 9771 - The Keystone Watches

Piaget White Gold Diamond Dial Ref. 9771

Piaget White Gold Diamond Dial Ref. 9771

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Piaget - Piaget White Gold Bracelet Watch with Diamond Bezel and Dial - The Keystone Watches

Piaget White Gold Bracelet Watch with Diamond Bezel and Dial

Piaget White Gold Bracelet Watch with Diamond Bezel and Dial

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Piaget - Piaget White Gold and Yellow Gold Watch with Black and Diamond Dial Ref. 7131 - The Keystone Watches

Piaget White Gold and Yellow Gold Watch with Black and Diamond Dial Ref. 7131

Piaget White Gold and Yellow Gold Watch with Black and Diamond Dial Ref. 7131

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Piaget - Piaget Yellow Gold Bracelet Watch with Diamond Markers - The Keystone Watches

Piaget Yellow Gold Bracelet Watch with Diamond Markers

Piaget Yellow Gold Bracelet Watch with Diamond Markers

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Patek Philippe - Patek Philippe Yellow Gold Annual Calendar Watch Ref. 5146 - The Keystone Watches

Patek Philippe Yellow Gold Annual Calendar Watch Ref. 5146

Patek Philippe Yellow Gold Annual Calendar Watch Ref. 5146

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Piaget - Piaget White Gold Opal Diamond Watch Ref. 9383A6 - The Keystone Watches

Piaget White Gold Opal Diamond Watch Ref. 9383A6

Piaget White Gold Opal Diamond Watch Ref. 9383A6

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A. Lange & Sohne - A. Lange & Sohne Lange 1 Moonphase Ref. 182.086 - The Keystone Watches

A. Lange & Sohne Lange 1 Moonphase Ref. 182.086

A. Lange & Sohne Lange 1 Moonphase Ref. 182.086

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Patek Philippe - Patek Philippe Yellow Gold Perpetual Calendar Retrograde Watch Ref. 5050 - The Keystone Watches

Patek Philippe Yellow Gold Perpetual Calendar Retrograde Watch Ref. 5050

Patek Philippe Yellow Gold Perpetual Calendar Retrograde Watch Ref. 5050

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Rolex - Rolex Steel Pepsi GMT-Master Ref. 1675 - The Keystone Watches

Rolex Steel Pepsi GMT-Master Ref. 1675

Rolex Steel Pepsi GMT-Master Ref. 1675

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Patek Philippe - Patek Philippe Steel Tonneau Ref. 3579 with Original Papers - The Keystone Watches

Patek Philippe Steel Tonneau Ref. 3579 with Original Papers

Patek Philippe Steel Tonneau Ref. 3579 with Original Papers

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Audemars Piguet - Audemars Piguet Two-Tone Royal Oak Moonphase Ref. 25594 - The Keystone Watches

Audemars Piguet Two-Tone Royal Oak Moonphase Ref. 25594

Audemars Piguet Two-Tone Royal Oak Moonphase Ref. 25594

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Patek Philippe - Patek Philippe Chronometro Gondolo 24 Hour Pocket Watch - The Keystone Watches

Patek Philippe Chronometro Gondolo 24 Hour Pocket Watch

Patek Philippe Chronometro Gondolo 24 Hour Pocket Watch

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Patek Philippe - Patek Philippe Platinum Pocket Watch - The Keystone Watches

Patek Philippe Platinum Pocket Watch

Patek Philippe Platinum Pocket Watch

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Patek Philippe - Patek Philippe White & Yellow Gold Pocket Watch - The Keystone Watches

Patek Philippe White & Yellow Gold Pocket Watch

Patek Philippe White & Yellow Gold Pocket Watch

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Piaget - Piaget White Gold Opal Diamond Ref. 9706D2 - The Keystone Watches

Piaget White Gold Opal Diamond Ref. 9706D2

Piaget White Gold Opal Diamond Ref. 9706D2

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Piaget - Piaget White Gold Opal Watch Ref. 4326D23 - The Keystone Watches

Piaget White Gold Opal Watch Ref. 4326D23

Piaget White Gold Opal Watch Ref. 4326D23

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Vacheron Constantin - Vacheron Constantin Steel Pocket Watch - The Keystone Watches

Vacheron Constantin Steel Pocket Watch

Vacheron Constantin Steel Pocket Watch

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Audemars Piguet - Audemars Piguet Two-Tone Royal Oak Ref. 56143 (NEW ARRIVAL) - The Keystone Watches

Audemars Piguet Two-Tone Royal Oak Ref. 56143 (NEW ARRIVAL)

Audemars Piguet Two-Tone Royal Oak Ref. 56143 (NEW ARRIVAL)

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Rolex - Rolex Yellow Gold Day-Date Ref. 1803 with Linen Dial and Box & Papers (NEW ARRIVAL) - The Keystone Watches

Rolex Yellow Gold Day-Date Ref. 1803 with Linen Dial and Box & Papers (NEW ARRIVAL)

Rolex Yellow Gold Day-Date Ref. 1803 with Linen Dial and Box & Papers (NEW ARRIVAL)

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Rolex - Rolex Yellow Gold Submariner Watch Ref. 16618 (NEW ARRIVAL) - The Keystone Watches

Rolex Yellow Gold Submariner Watch Ref. 16618 (NEW ARRIVAL)

Rolex Yellow Gold Submariner Watch Ref. 16618 (NEW ARRIVAL)

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Patek Philippe - Patek Philippe White Gold World Time Watch Ref. 5130 - The Keystone Watches

Patek Philippe White Gold World Time Watch Ref. 5130

Patek Philippe White Gold World Time Watch Ref. 5130

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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.

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