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Patek Philippe - Patek Philippe White Gold Ellipse Diamond Bracelet Ref. 4122 - The Keystone Watches

Patek Philippe White Gold Ellipse Diamond Bracelet Ref. 4122

Patek Philippe White Gold Ellipse Diamond Bracelet Ref. 4122

$46,000 USD
 
Patek Philippe - Patek Philippe Yellow Gold Golden Ellipse Ref. 3546 - The Keystone Watches

Patek Philippe Yellow Gold Golden Ellipse Ref. 3546

Patek Philippe Yellow Gold Golden Ellipse Ref. 3546

$14,500 USD
 
Patek Philippe White Gold Calatrava Ref. 570 with Original Paper

Patek Philippe White Gold Calatrava Ref. 570 with Original Paper

Patek Philippe White Gold Calatrava Ref. 570 with Original Paper

$45,000 USD
 
Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 2497 Retailed by Gubelin, Second 2497 Produced

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 2497 Retailed by Gubelin, Second 2497 Produced

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 2497 Retailed by Gubelin, Second 2497 Produced

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Tonneau Ref. 2469 - The Keystone Watches

Patek Philippe Yellow Gold Tonneau Ref. 2469

Patek Philippe Yellow Gold Tonneau Ref. 2469

$19,800 USD
 
Patek Philippe White Gold & Yellow Gold Rectangular Watch

Patek Philippe White Gold & Yellow Gold Rectangular Watch

Patek Philippe White Gold & Yellow Gold Rectangular Watch

$32,000 USD
 
Patek Philippe Yellow Gold Calatrava Breguet Numerals Ref. 2533 (New Arrival)

Patek Philippe Yellow Gold Calatrava Breguet Numerals Ref. 2533 (New Arrival)

Patek Philippe Yellow Gold Calatrava Breguet Numerals Ref. 2533 (New Arrival)

Sold Out

 
Patek Philippe Yellow Gold Black Dial Calatrava Watch Ref. 3514

Patek Philippe Yellow Gold Black Dial Calatrava Watch Ref. 3514

Patek Philippe Yellow Gold Black Dial Calatrava Watch Ref. 3514

$48,000 USD
 
Patek Philippe - Patek Philippe Yellow Gold World Time Watch Ref. 1415 - The Keystone Watches

Patek Philippe Yellow Gold World Time Watch Ref. 1415

Patek Philippe Yellow Gold World Time Watch Ref. 1415

$245,000 USD
 
Patek Philippe Yellow Gold Golden Rule Ref. 2526, Retailed by Tiffany & Co.

Patek Philippe Yellow Gold Golden Rule Ref. 2526, Retailed by Tiffany & Co.

Patek Philippe Yellow Gold Golden Rule Ref. 2526, Retailed by Tiffany & Co.

$245,000 USD
 
Patek Philippe - Patek Philippe White Gold Baguette Diamond Watch Ref. 3540 - The Keystone Watches

Patek Philippe White Gold Baguette Diamond Watch Ref. 3540

Patek Philippe White Gold Baguette Diamond Watch Ref. 3540

$30,000 USD
 
Patek Philippe Yellow & White Gold Gubelin Art Deco Watch

Patek Philippe Yellow & White Gold Gubelin Art Deco Watch

Patek Philippe Yellow & White Gold Gubelin Art Deco Watch

$29,500 USD
 
Patek Philippe Yellow Gold Chronograph Ref. 1579, Retailed by Somazzi

Patek Philippe Yellow Gold Chronograph Ref. 1579, Retailed by Somazzi

Patek Philippe Yellow Gold Chronograph Ref. 1579, Retailed by Somazzi

$150,000 USD
 
Patek Philipp Steel Jumbo UFO Ref. 3580 (New Arrival)

Patek Philipp Steel Jumbo UFO Ref. 3580 (New Arrival)

Patek Philipp Steel Jumbo UFO Ref. 3580 (New Arrival)

$16,000 USD
 
Patek Philippe Yellow Gold and Lapis Lazuli Watch Ref. 4240

Patek Philippe Yellow Gold and Lapis Lazuli Watch Ref. 4240

Patek Philippe Yellow Gold and Lapis Lazuli Watch Ref. 4240

$300,000 USD
 
Patek Philippe Yellow Gold Gondolo Watch

Patek Philippe Yellow Gold Gondolo Watch

Patek Philippe Yellow Gold Gondolo Watch

$18,500 USD
 
Patek Philippe Yellow Gold Hour Glass Ref. 2456

Patek Philippe Yellow Gold Hour Glass Ref. 2456

Patek Philippe Yellow Gold Hour Glass Ref. 2456

$20,000 USD
 
Patek Philippe Pink Gold for Guillermin Paris, Circa 1947

Patek Philippe Pink Gold for Guillermin Paris, Circa 1947

Patek Philippe Pink Gold for Guillermin Paris, Circa 1947

Sold Out

 
Patek Philippe White Gold Calatrava Watch Ref. 3416 with Archive

Patek Philippe White Gold Calatrava Watch Ref. 3416 with Archive

Patek Philippe White Gold Calatrava Watch Ref. 3416 with Archive

$17,500 USD
 
Patek Philippe - Patek Philippe White Gold Golden Ellipse Ref. 3566 - The Keystone Watches

Patek Philippe White Gold Golden Ellipse Ref. 3566

Patek Philippe White Gold Golden Ellipse Ref. 3566

$15,000 USD
 
Patek Philippe - Patek Philippe White Gold Ellipse Ref. 3548 - The Keystone Watches

Patek Philippe White Gold Ellipse Ref. 3548

Patek Philippe White Gold Ellipse Ref. 3548

$15,000 USD
 
Patek Philippe Yellow Gold Golden Ellipse Ref. 4183 (New Arrival)

Patek Philippe Yellow Gold Golden Ellipse Ref. 4183 (New Arrival)

Patek Philippe Yellow Gold Golden Ellipse Ref. 4183 (New Arrival)

Sold Out

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New Arrivals Preview
 
Vacheron Constantin Two-Tone 222 with Emblem of Saudi Arabia (New Arrival

Vacheron Constantin Two-Tone 222 with Emblem of Saudi Arabia (New Arrival

Vacheron Constantin Two-Tone 222 with Emblem of Saudi Arabia (New Arrival

$55,000 USD
 
Rolex Yellow Gold SARU GMT-Master Watch Ref. 116748 (New Arrival)

Rolex Yellow Gold SARU GMT-Master Watch Ref. 116748 (New Arrival)

Rolex Yellow Gold SARU GMT-Master Watch Ref. 116748 (New Arrival)

$86,000 USD
 
Patek Philippe Rose Gold Top Hat Watch Ref. 1450 (New Arrival)

Patek Philippe Rose Gold Top Hat Watch Ref. 1450 (New Arrival)

Patek Philippe Rose Gold Top Hat Watch Ref. 1450 (New Arrival)

$14,000 USD
 
Audemars Piguet Round UFO-Style Bracelet Watch (New Arrival)

Audemars Piguet Round UFO-Style Bracelet Watch (New Arrival)

Audemars Piguet Round UFO-Style Bracelet Watch (New Arrival)

$10,500 USD
 
Patek Philippe Pink Gold Concealed Gay Freres Watch (New Arrival)

Patek Philippe Pink Gold Concealed Gay Freres Watch (New Arrival)

Patek Philippe Pink Gold Concealed Gay Freres Watch (New Arrival)

$29,500 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
 
Cartier Yellow Gold Santos Ref. 81736781 with Sapphire Bezel and Bracelet (New Arrival)

Cartier Yellow Gold Santos Ref. 81736781 with Sapphire Bezel and Bracelet (New Arrival)

Cartier Yellow Gold Santos Ref. 81736781 with Sapphire Bezel and Bracelet (New Arrival)

$55,000 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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