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Cartier - Cartier White Gold Monopoussir Chronograph Watch Ref. 2396 (New Arrival) - The Keystone Watches

Cartier White Gold Monopoussir Chronograph Watch Ref. 2396 (New Arrival)

Cartier White Gold Monopoussir Chronograph Watch Ref. 2396 (New Arrival)

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Piaget Yellow Gold Baguette Diamond Onyx Galaxy Watch Ref. 74912

Piaget Yellow Gold Baguette Diamond Onyx Galaxy Watch Ref. 74912

Piaget Yellow Gold Baguette Diamond Onyx Galaxy Watch Ref. 74912

$235,000 USD
 
Cartier - Cartier Yellow Gold Santos Dumont Ref. 96053 - The Keystone Watches

Cartier Yellow Gold Santos Dumont Ref. 96053

Cartier Yellow Gold Santos Dumont Ref. 96053

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Piaget - Piaget Yellow Gold Watch Ref. 9706 with Lapis and Diamond Dial - The Keystone Watches

Piaget Yellow Gold Watch Ref. 9706 with Lapis and Diamond Dial

Piaget Yellow Gold Watch Ref. 9706 with Lapis and Diamond Dial

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A. Lange & Sohne Yellow Gold Little Lange 1 Ref. 111.021

A. Lange & Sohne Yellow Gold Little Lange 1 Ref. 111.021

A. Lange & Sohne Yellow Gold Little Lange 1 Ref. 111.021

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Cartier - Cartier Yellow Gold Mini Tonneau Watch Ref. 2563 - The Keystone Watches

Cartier Yellow Gold Mini Tonneau Watch Ref. 2563

Cartier Yellow Gold Mini Tonneau Watch Ref. 2563

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Franck Muller - Franck Muller White Gold Perpetual Calendar Ref. 5850QP - The Keystone Watches

Franck Muller White Gold Perpetual Calendar Ref. 5850QP

Franck Muller White Gold Perpetual Calendar Ref. 5850QP

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Gerald Genta - Gerald Genta White Gold Skeleton Octagonal Watch Ref. G2099 - The Keystone Watches

Gerald Genta White Gold Skeleton Octagonal Watch Ref. G2099

Gerald Genta White Gold Skeleton Octagonal Watch Ref. G2099

$18,500 USD
 
Cartier - Cartier Platinum Tank Louis Ref. 1601 - The Keystone Watches

Cartier Platinum Tank Louis Ref. 1601

Cartier Platinum Tank Louis Ref. 1601

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Cartier - Cartier Platinum Santos Dumont Ref. 1575 - The Keystone Watches

Cartier Platinum Santos Dumont Ref. 1575

Cartier Platinum Santos Dumont Ref. 1575

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A. Lange & Sohne - A. Lange & Sohne Rose Gold Richard Lange Ref. 232.032 - The Keystone Watches

A. Lange & Sohne Rose Gold Richard Lange Ref. 232.032

A. Lange & Sohne Rose Gold Richard Lange Ref. 232.032

$19,500 USD
 
Cartier Vintage Platinum Tonneau Mecanique Watch

Cartier Vintage Platinum Tonneau Mecanique Watch

Cartier Vintage Platinum Tonneau Mecanique Watch

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Cartier - Cartier Two Tone Santos Ref. 2961 with Godron Bracelet - The Keystone Watches

Cartier Two Tone Santos Ref. 2961 with Godron Bracelet

Cartier Two Tone Santos Ref. 2961 with Godron Bracelet

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Cartier Yellow Gold Baignoire Bangle Watch Ref. WGBA0021

Cartier Yellow Gold Baignoire Bangle Watch Ref. WGBA0021

Cartier Yellow Gold Baignoire Bangle Watch Ref. WGBA0021

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Cartier - Cartier Yellow Gold Tank Normale Watch Ref. 78902 with Rare Dial - The Keystone Watches

Cartier Yellow Gold Tank Normale Watch Ref. 78902 with Rare Dial

Cartier Yellow Gold Tank Normale Watch Ref. 78902 with Rare Dial

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Cartier - Cartier Yellow Gold Mini Baignoire on Bracelet Ref. 2960 - The Keystone Watches

Cartier Yellow Gold Mini Baignoire on Bracelet Ref. 2960

Cartier Yellow Gold Mini Baignoire on Bracelet Ref. 2960

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Piaget White Gold Ladies Lapis Dial Diamond Bezel Watch Ref. 9338

Piaget White Gold Ladies Lapis Dial Diamond Bezel Watch Ref. 9338

Piaget White Gold Ladies Lapis Dial Diamond Bezel Watch Ref. 9338

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Cartier White Gold Tortue Ref. WGTO0003 with Original Baguette Diamonds

Cartier White Gold Tortue Ref. WGTO0003 with Original Baguette Diamonds

Cartier White Gold Tortue Ref. WGTO0003 with Original Baguette Diamonds

$55,000 USD
 
Cartier - Cartier Yellow Gold Vintage Ladies Tank - The Keystone Watches

Cartier Yellow Gold Vintage Ladies Tank

Cartier Yellow Gold Vintage Ladies Tank

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A. Lange & Sohne - A. Lange & Sohne White Gold Lange 1 Ref. 101.039 - The Keystone Watches

A. Lange & Sohne White Gold Lange 1 Ref. 101.039

A. Lange & Sohne White Gold Lange 1 Ref. 101.039

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Cartier - Cartier Rose Gold Ballon Bleu Ref. W69002Z2 - The Keystone Watches

Cartier Rose Gold Ballon Bleu Ref. W69002Z2

Cartier Rose Gold Ballon Bleu Ref. W69002Z2

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Piaget White Gold Dancer Ref. 80131 with Factory Diamonds on Band

Piaget White Gold Dancer Ref. 80131 with Factory Diamonds on Band

Piaget White Gold Dancer Ref. 80131 with Factory Diamonds on Band

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Piaget - Piaget White Pave and Baguette Bezel Watch Ref. 93414A6 - The Keystone Watches

Piaget White Pave and Baguette Bezel Watch Ref. 93414A6

Piaget White Pave and Baguette Bezel Watch Ref. 93414A6

$16,500 USD
 
Cartier Steel and Gold Santos Ref. 2961 with Original Paper

Cartier Steel and Gold Santos Ref. 2961 with Original Paper

Cartier Steel and Gold Santos Ref. 2961 with Original Paper

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Piaget Yellow Gold Watch Ref. 8065

Piaget Yellow Gold Watch Ref. 8065

Piaget Yellow Gold Watch Ref. 8065

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Cartier - Cartier Yellow Gold Diamond Cover Watch - The Keystone Watches

Cartier Yellow Gold Diamond Cover Watch

Cartier Yellow Gold Diamond Cover Watch

$25,000 USD
 
Breguet White Gold Chronograph Skeleton Diamond Watch Ref. 5238

Breguet White Gold Chronograph Skeleton Diamond Watch Ref. 5238

Breguet White Gold Chronograph Skeleton Diamond Watch Ref. 5238

$120,000 USD
 
Piaget Yellow Gold Protocole Watch Ref. 9154

Piaget Yellow Gold Protocole Watch Ref. 9154

Piaget Yellow Gold Protocole Watch Ref. 9154

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Piaget Yellow Gold Polo Ref. 7131 in Like New Condition Box and Papers

Piaget Yellow Gold Polo Ref. 7131 in Like New Condition Box and Papers

Piaget Yellow Gold Polo Ref. 7131 in Like New Condition Box and Papers

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Piaget - Piaget White Gold Cover Watch - The Keystone Watches

Piaget White Gold Cover Watch

Piaget White Gold Cover Watch

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Piaget White Gold Mechanical Bracelet Watch Ref. P10178

Piaget White Gold Mechanical Bracelet Watch Ref. P10178

Piaget White Gold Mechanical Bracelet Watch Ref. P10178

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Piaget - Piaget White Gold Watch Ref. 80131 - The Keystone Watches

Piaget White Gold Watch Ref. 80131

Piaget White Gold Watch Ref. 80131

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Piaget - Piaget Yellow Gold Polo Day Date Ref. 15562C701 - The Keystone Watches

Piaget Yellow Gold Polo Day Date Ref. 15562C701

Piaget Yellow Gold Polo Day Date Ref. 15562C701

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Piaget Yellow Gold Tradition Ref. 9352 with Pave Dial

Piaget Yellow Gold Tradition Ref. 9352 with Pave Dial

Piaget Yellow Gold Tradition Ref. 9352 with Pave Dial

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Breguet - Breguet White Gold Classique Perpetual Chronograph Ref. 5617BB - The Keystone Watches

Breguet White Gold Classique Perpetual Chronograph Ref. 5617BB

Breguet White Gold Classique Perpetual Chronograph Ref. 5617BB

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Breguet - Breguet Yellow Gold Classique Ref. 3210 (NEW ARRIVAL) - The Keystone Watches

Breguet Yellow Gold Classique Ref. 3210 (NEW ARRIVAL)

Breguet Yellow Gold Classique Ref. 3210 (NEW ARRIVAL)

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New Arrivals Preview
 
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
 
Patek Philippe Rose Gold Calatrava Ref. 1471 (New Arrival)

Patek Philippe Rose Gold Calatrava Ref. 1471 (New Arrival)

Patek Philippe Rose Gold Calatrava Ref. 1471 (New Arrival)

$8,750 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
 
Rolex Steel Milgauss Ref. 1019 (New Arrival)

Rolex Steel Milgauss Ref. 1019 (New Arrival)

Rolex Steel Milgauss Ref. 1019 (New Arrival)

$23,500 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
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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