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Bulgari 18k Yellow Gold Monete Ring (Objet)

Bulgari 18k Yellow Gold Monete Ring (Objet)

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Bulgari Monete Ancient Coin Ring from 4th Century BC (Objet)

Bulgari Monete Ancient Coin Ring from 4th Century BC (Objet)

Bulgari Monete Ancient Coin Ring from 4th Century BC (Objet)

$8,000 USD
 
Bulgari Monete Coin Ring (Objet)

Bulgari Monete Coin Ring (Objet)

Bulgari Monete Coin Ring (Objet)

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Bulgari - Bulgari Platinum Octo Finissimo Ref. BGO40PXT - The Keystone Watches

Bulgari Platinum Octo Finissimo Ref. BGO40PXT

Bulgari Platinum Octo Finissimo Ref. BGO40PXT

Sold Out

 
Bulgari - Bulgari Platinum Tourbillon Watch - The Keystone Watches

Bulgari Platinum Tourbillon Watch

Bulgari Platinum Tourbillon Watch

Sold Out

 

Bulgari Ring, Circa 1970 (Objet)

Bulgari Ring, Circa 1970 (Objet)

$3,500 USD
 
Bulgari - Bulgari Tri Color Tubogas Ref. BB1927 - The Keystone Watches

Bulgari Tri Color Tubogas Ref. BB1927

Bulgari Tri Color Tubogas Ref. BB1927

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Bulgari - Bulgari Tricolor Farfalla Gold Vintage Watch Ref BJ04 - The Keystone Watches

Bulgari Tricolor Farfalla Gold Vintage Watch Ref BJ04

Bulgari Tricolor Farfalla Gold Vintage Watch Ref BJ04

Sold Out

 
Bulgari Yellow Gold Monete Coin Necklace (Objet)

Bulgari Yellow Gold Monete Coin Necklace (Objet)

Bulgari Yellow Gold Monete Coin Necklace (Objet)

$58,000 USD
 

Bulgari Yellow Gold Serpenti Watch Ref. BB191T (New Arrival)

Bulgari Yellow Gold Serpenti Watch Ref. BB191T (New Arrival)

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Bulgari - Bulgari Yellow Gold Serpenti Watch, 1960s - The Keystone Watches

Bulgari Yellow Gold Serpenti Watch, 1960s

Bulgari Yellow Gold Serpenti Watch, 1960s

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Bulova - Bulova Two-Tone Royal Oak Automatic Watch - The Keystone Watches

Bulova Two-Tone Royal Oak Automatic Watch

Bulova Two-Tone Royal Oak Automatic Watch

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Cartier - Carter White Gold Baignoire Allongee with Diamond and Sapphire Pave Dial Ref. 2514 - The Keystone Watches

Carter White Gold Baignoire Allongee with Diamond and Sapphire Pave Dial Ref. 2514

Carter White Gold Baignoire Allongee with Diamond and Sapphire Pave Dial Ref. 2514

Sold Out

 
Cartier - Cartier Basculante Mechanical Ref. 2390 - The Keystone Watches

Cartier Basculante Mechanical Ref. 2390

Cartier Basculante Mechanical Ref. 2390

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Cartier - Cartier Chariot Cigarette Box from Cartier London  by Jacques Cartier (Objet) - The Keystone Watches

Cartier Chariot Cigarette Box from Cartier London by Jacques Cartier (Objet)

Cartier Chariot Cigarette Box from Cartier London by Jacques Cartier (Objet)

$9,500 USD
 
Cartier - Cartier CPCP White Gold Tank Monopoussoir Chronograph Ref. 3078 - The Keystone Watches

Cartier CPCP White Gold Tank Monopoussoir Chronograph Ref. 3078

Cartier CPCP White Gold Tank Monopoussoir Chronograph Ref. 3078

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Cartier - Cartier Ladies White Gold Diamond Panthere Ref. WF3118FK - The Keystone Watches

Cartier Ladies White Gold Diamond Panthere Ref. WF3118FK

Cartier Ladies White Gold Diamond Panthere Ref. WF3118FK

Sold Out

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

Cartier London Yellow Gold Tank Watch

Cartier London Yellow Gold Tank Watch

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Cartier Panthere White Gold Original Diamond Panthere Ref. WF3091F3

Cartier Panthere White Gold Original Diamond Panthere Ref. WF3091F3

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Cartier - Cartier Paris White Gold Diamond Tank Watch, Movement by Vacheron Constantin - The Keystone Watches

Cartier Paris White Gold Diamond Tank Watch, Movement by Vacheron Constantin

Cartier Paris White Gold Diamond Tank Watch, Movement by Vacheron Constantin

$37,500 USD
 

Cartier Paris Yellow Gold Tank Louis Watch

Cartier Paris Yellow Gold Tank Louis Watch

$14,500 USD
 
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 Platinum and Diamond Tank Chinoise Ref. 2685 - The Keystone Watches

Cartier Platinum and Diamond Tank Chinoise Ref. 2685

Cartier Platinum and Diamond Tank Chinoise Ref. 2685

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Cartier - Cartier Platinum Asymmetric Tank Limited Edition Watch, Ref. 2488 - The Keystone Watches

Cartier Platinum Asymmetric Tank Limited Edition Watch, Ref. 2488

Cartier Platinum Asymmetric Tank Limited Edition Watch, Ref. 2488

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Cartier - Cartier Platinum Asymmetrical Tank Watch, Piece Unique - The Keystone Watches

Cartier Platinum Asymmetrical Tank Watch, Piece Unique

Cartier Platinum Asymmetrical Tank Watch, Piece Unique

Sold Out

 

Cartier Platinum Baignoire Mechanical Watch

Cartier Platinum Baignoire Mechanical Watch

Sold Out

 
Cartier - Cartier Platinum Baignoire Watch, 1960 - The Keystone Watches

Cartier Platinum Baignoire Watch, 1960

Cartier Platinum Baignoire Watch, 1960

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Cartier - Cartier Platinum Baignoire Watch, 1966 - The Keystone Watches

Cartier Platinum Baignoire Watch, 1966

Cartier Platinum Baignoire Watch, 1966

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Cartier Platinum Chinoise Tortue Watch

Cartier Platinum Chinoise Tortue Watch

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Cartier - Cartier Platinum Crash Diamond Watch - The Keystone Watches

Cartier Platinum Crash Diamond Watch

Cartier Platinum Crash Diamond Watch

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Cartier - Cartier Platinum Diabolo Tourbillon Watch - The Keystone Watches

Cartier Platinum Diabolo Tourbillon Watch

Cartier Platinum Diabolo Tourbillon Watch

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Cartier - Cartier Platinum Jumbo Tank Americaine Mechanique Watch - The Keystone Watches

Cartier Platinum Jumbo Tank Americaine Mechanique Watch

Cartier Platinum Jumbo Tank Americaine Mechanique Watch

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Cartier - Cartier Platinum Ronde Louis Cartier CPCP Ref. 1897E (NEW ARRIVAL) - The Keystone Watches

Cartier Platinum Ronde Louis Cartier CPCP Ref. 1897E (NEW ARRIVAL)

Cartier Platinum Ronde Louis Cartier CPCP Ref. 1897E (NEW ARRIVAL)

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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

Sold Out

 

Cartier Platinum Ronde Louis Ref. W1528051 CPCP Collection

Cartier Platinum Ronde Louis Ref. W1528051 CPCP Collection

Sold Out

 
Cartier - Cartier Platinum Santos Automatic Watch, 1979 - The Keystone Watches

Cartier Platinum Santos Automatic Watch, 1979

Cartier Platinum Santos Automatic Watch, 1979

Sold Out

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New Arrivals Preview
 
Rolex - Rolex Yellow Gold Cellini Watch Ref. 4934/8 with Logo Bracelet (New Arrival) - The Keystone Watches

Rolex Yellow Gold Cellini Watch Ref. 4934/8 with Logo Bracelet (New Arrival)

Rolex Yellow Gold Cellini Watch Ref. 4934/8 with Logo Bracelet (New Arrival)

$15,500 USD
 
Rolex White Gold Cellini Ref. 4083 (New Arrival)

Rolex White Gold Cellini Ref. 4083 (New Arrival)

Rolex White Gold Cellini Ref. 4083 (New Arrival)

$4,500 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
 
Patek Philippe White Gold Calatrava Watch Ref. 3445 in Top Condition (New Arrival)

Patek Philippe White Gold Calatrava Watch Ref. 3445 in Top Condition (New Arrival)

Patek Philippe White Gold Calatrava Watch Ref. 3445 in Top Condition (New Arrival)

$15,000 USD
 
Rolex - Rolex Yellow Gold Day-Date Ref. 18238 in Original Condition (New Arrival) - The Keystone Watches

Rolex Yellow Gold Day-Date Ref. 18238 in Original Condition (New Arrival)

Rolex Yellow Gold Day-Date Ref. 18238 in Original Condition (New Arrival)

$17,500 USD
 
Patek Philippe - Patek Philiipe White Gold Pocket Watch Ref. 874 (New Arrival) - The Keystone Watches

Patek Philiipe White Gold Pocket Watch Ref. 874 (New Arrival)

Patek Philiipe White Gold Pocket Watch Ref. 874 (New Arrival)

$23,500 USD
 
Patek Philippe - Patek Philippe Yellow Gold Watch Ref. 3479 Retailed by Beyer (New Arrival) - The Keystone Watches

Patek Philippe Yellow Gold Watch Ref. 3479 Retailed by Beyer (New Arrival)

Patek Philippe Yellow Gold Watch Ref. 3479 Retailed by Beyer (New Arrival)

$8,500 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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