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Cartier Yellow Gold Helm Gouvernail Watch

Cartier Yellow Gold Helm Gouvernail Watch

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Cartier - Cartier Yellow Gold Santos Ref. 78097 with Paris Dial - The Keystone Watches

Cartier Yellow Gold Santos Ref. 78097 with Paris Dial

Cartier Yellow Gold Santos Ref. 78097 with Paris Dial

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Cartier - Cartier Yellow Gold Tank Obus Carree Watch Ref. 2380, CPCP Edition of 100 Pieces - The Keystone Watches

Cartier Yellow Gold Tank Obus Carree Watch Ref. 2380, CPCP Edition of 100 Pieces

Cartier Yellow Gold Tank Obus Carree Watch Ref. 2380, CPCP Edition of 100 Pieces

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Cartier - Cartier Rose Gold Tank Ref. WGTA0011 - The Keystone Watches

Cartier Rose Gold Tank Ref. WGTA0011

Cartier Rose Gold Tank Ref. WGTA0011

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Cartier - Cartier White Gold Baignoire Watch - The Keystone Watches

Cartier White Gold Baignoire Watch

Cartier White Gold Baignoire Watch

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Cartier - Cartier Yellow Gold Baignoire London - The Keystone Watches

Cartier Yellow Gold Baignoire London

Cartier Yellow Gold Baignoire London

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Cartier - Cartier Platinum VLC Watch with Original Red Dial - The Keystone Watches

Cartier Platinum VLC Watch with Original Red Dial

Cartier Platinum VLC Watch with Original Red Dial

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Cartier - Cartier Steel Santos Dumont Ref. WSSA0046 with Black Lacquer Dial - The Keystone Watches

Cartier Steel Santos Dumont Ref. WSSA0046 with Black Lacquer Dial

Cartier Steel Santos Dumont Ref. WSSA0046 with Black Lacquer Dial

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

Cartier Platinum Santos Ref. 1575

Cartier Platinum Santos Ref. 1575

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Cartier - Cartier Steel Watch with Bumper Automatic Movement, European Watch & Clock - The Keystone Watches

Cartier Steel Watch with Bumper Automatic Movement, European Watch & Clock

Cartier Steel Watch with Bumper Automatic Movement, European Watch & Clock

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Cartier - Cartier Yellow Gold Tank Louis Ref. 8110 on a Bracelet - The Keystone Watches

Cartier Yellow Gold Tank Louis Ref. 8110 on a Bracelet

Cartier Yellow Gold Tank Louis Ref. 8110 on a Bracelet

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Cartier - Cartier Yellow Gold Paris Crash 1991 - The Keystone Watches

Cartier Yellow Gold Paris Crash 1991

Cartier Yellow Gold Paris Crash 1991

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Cartier White Gold Rotonde Mystery Ref. W1556224

Cartier White Gold Rotonde Mystery Ref. W1556224

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Cartier Platinum Tank Cintree Ref. 4124

Cartier Platinum Tank Cintree Ref. 4124

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Cartier - Cartier Platinum Ronde Louis Ref. W1528051 CPCP Collection - The Keystone Watches

Cartier Platinum Ronde Louis Ref. W1528051 CPCP Collection

Cartier Platinum Ronde Louis Ref. W1528051 CPCP Collection

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

Cartier Platinum Santos Ref. 1575

Cartier Platinum Santos Ref. 1575

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Cartier - Cartier Yellow Gold Tank Asymetrique - The Keystone Watches

Cartier Yellow Gold Tank Asymetrique

Cartier Yellow Gold Tank Asymetrique

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Cartier - Cartier Yellow Gold Jumbo Tank Automatique Watch, Circa 1970s - The Keystone Watches

Cartier Yellow Gold Jumbo Tank Automatique Watch, Circa 1970s

Cartier Yellow Gold Jumbo Tank Automatique Watch, Circa 1970s

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Cartier Yellow Gold Tank Watch, Circa 1965

Cartier Yellow Gold Tank Watch, Circa 1965

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Cartier - Cartier White Gold Rotonde de Cartier Ref. W1556253 - The Keystone Watches

Cartier White Gold Rotonde de Cartier Ref. W1556253

Cartier White Gold Rotonde de Cartier Ref. W1556253

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Cartier - Cartier Yellow Gold and Enamel Travel Watch - The Keystone Watches

Cartier Yellow Gold and Enamel Travel Watch

Cartier Yellow Gold and Enamel Travel Watch

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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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New Arrivals Preview
 
Rolex Steel Oyster Perpetual Ref. 6050 (New Arrival)

Rolex Steel Oyster Perpetual Ref. 6050 (New Arrival)

Rolex Steel Oyster Perpetual Ref. 6050 (New Arrival)

$8,500 USD
 
Audemard Piguet Octagon White Gold Bracelet Watch (New Arrival)

Audemard Piguet Octagon White Gold Bracelet Watch (New Arrival)

Audemard Piguet Octagon White Gold Bracelet Watch (New Arrival)

$20,000 USD
 
Patek Philippe Yellow Gold Calatrava Ref. 3919J (New Arrival)

Patek Philippe Yellow Gold Calatrava Ref. 3919J (New Arrival)

Patek Philippe Yellow Gold Calatrava Ref. 3919J (New Arrival)

$128,000 USD
 
Patek Philippe Pink Gold Watch Ref. 2488 (New Arrival)

Patek Philippe Pink Gold Watch Ref. 2488 (New Arrival)

Patek Philippe Pink Gold Watch Ref. 2488 (New Arrival)

$17,500 USD
 
Patek Philippe White Gold Bracelet Watch Ref. 3430 (New Arrival)

Patek Philippe White Gold Bracelet Watch Ref. 3430 (New Arrival)

Patek Philippe White Gold Bracelet Watch Ref. 3430 (New Arrival)

$15,000 USD
 
Patek Philippe Yellow Gold Cioccolatone Watch Ref. 2486 (New Arrival)

Patek Philippe Yellow Gold Cioccolatone Watch Ref. 2486 (New Arrival)

Patek Philippe Yellow Gold Cioccolatone Watch Ref. 2486 (New Arrival)

$19,500 USD
 
Vacheron Constantin White Gold Toledo Ref. 47300 (New Arrival)

Vacheron Constantin White Gold Toledo Ref. 47300 (New Arrival)

Vacheron Constantin White Gold Toledo Ref. 47300 (New Arrival)

$17,000 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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