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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Chrono Ruby Watch Ref. 5271 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Chrono Ruby Watch Ref. 5271

Patek Philippe Platinum Perpetual Calendar Chrono Ruby Watch Ref. 5271

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Chrono Sapphire Watch Ref. 5271 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Chrono Sapphire Watch Ref. 5271

Patek Philippe Platinum Perpetual Calendar Chrono Sapphire Watch Ref. 5271

Sold Out

 
Audemars Piguet - Audemars Piguet Black Ceramic Royal Oak Perpetual Calendar Watch - The Keystone Watches

Audemars Piguet Black Ceramic Royal Oak Perpetual Calendar Watch

Audemars Piguet Black Ceramic Royal Oak Perpetual Calendar Watch

Sold Out

 
Cartier - Cartier White Gold Tortue Minute Repeater Watch - The Keystone Watches

Cartier White Gold Tortue Minute Repeater Watch

Cartier White Gold Tortue Minute Repeater Watch

Sold Out

 
Patek Philippe - Patek Philippe White Gold Nautilus Moonphase Watch Ref. 5712 - The Keystone Watches

Patek Philippe White Gold Nautilus Moonphase Watch Ref. 5712

Patek Philippe White Gold Nautilus Moonphase Watch Ref. 5712

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Patek Philippe - Patek Philippe Yellow Gold World Time Watch Ref. 5110, with Original Box and Papers - The Keystone Watches

Patek Philippe Yellow Gold World Time Watch Ref. 5110, with Original Box and Papers

Patek Philippe Yellow Gold World Time Watch Ref. 5110, with Original Box and Papers

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Rolex - Rolex Yellow Gold Day-Date II Baguette Diamond Watch Ref. 218398 - The Keystone Watches

Rolex Yellow Gold Day-Date II Baguette Diamond Watch Ref. 218398

Rolex Yellow Gold Day-Date II Baguette Diamond Watch Ref. 218398

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A. Lange & Sohne - A. Lange & Sohne White Gold Langematik Perpetual Watch Ref. 310.026 - The Keystone Watches

A. Lange & Sohne White Gold Langematik Perpetual Watch Ref. 310.026

A. Lange & Sohne White Gold Langematik Perpetual Watch Ref. 310.026

Sold Out

 
A. Lange & Sohne - A. Lange & Sohne Platinum Cabaret Tourbillon Watch - The Keystone Watches

A. Lange & Sohne Platinum Cabaret Tourbillon Watch

A. Lange & Sohne Platinum Cabaret Tourbillon Watch

Sold Out

 
Patek Philippe - Patek Philippe White Gold Annual Calendar Chronograph Watch Ref. 5960 - The Keystone Watches

Patek Philippe White Gold Annual Calendar Chronograph Watch Ref. 5960

Patek Philippe White Gold Annual Calendar Chronograph Watch Ref. 5960

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Patek Philippe - Patek Philippe Rose Gold Perpetual Chronograph Split Seconds Watch Ref. 5204 - The Keystone Watches

Patek Philippe Rose Gold Perpetual Chronograph Split Seconds Watch Ref. 5204

Patek Philippe Rose Gold Perpetual Chronograph Split Seconds Watch Ref. 5204

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Patek Philippe - Patek Philippe Yellow Gold Annual Calendar Watch Ref. 5036 - The Keystone Watches

Patek Philippe Yellow Gold Annual Calendar Watch Ref. 5036

Patek Philippe Yellow Gold Annual Calendar Watch Ref. 5036

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Patek Philippe - Patek Philippe Platinum World Time Cloisonne Watch Ref. 5131 - The Keystone Watches

Patek Philippe Platinum World Time Cloisonne Watch Ref. 5131

Patek Philippe Platinum World Time Cloisonne Watch Ref. 5131

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Audemars Piguet - Audemars Piguet Royal Oak Platinum Skeletonized Tourbillon Watch Ref. 26511 - The Keystone Watches

Audemars Piguet Royal Oak Platinum Skeletonized Tourbillon Watch Ref. 26511

Audemars Piguet Royal Oak Platinum Skeletonized Tourbillon Watch Ref. 26511

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Patek Philippe - Patek Philippe Aquanaut Travel Time Watch Ref. 5164 - The Keystone Watches

Patek Philippe Aquanaut Travel Time Watch Ref. 5164

Patek Philippe Aquanaut Travel Time Watch Ref. 5164

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Richard Mille - Richard Mille Carbon Yas Marina Circuit Watch Ref. RM055 - The Keystone Watches

Richard Mille Carbon Yas Marina Circuit Watch Ref. RM055

Richard Mille Carbon Yas Marina Circuit Watch Ref. RM055

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Rolex - Rolex White Gold Cosmograph Daytona Watch Ref. 116519 - The Keystone Watches

Rolex White Gold Cosmograph Daytona Watch Ref. 116519

Rolex White Gold Cosmograph Daytona Watch Ref. 116519

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Patek Philippe - Patek Philippe Platinum Annual Calendar Watch Ref. 5035 - The Keystone Watches

Patek Philippe Platinum Annual Calendar Watch Ref. 5035

Patek Philippe Platinum Annual Calendar Watch Ref. 5035

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Patek Philippe - Patek Philippe White Gold Annual Calendar Tiffany & Co. Watch Ref. 5396 - The Keystone Watches

Patek Philippe White Gold Annual Calendar Tiffany & Co. Watch Ref. 5396

Patek Philippe White Gold Annual Calendar Tiffany & Co. Watch Ref. 5396

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Audemars Piguet - Audemars Piguet Royal Oak Chronograph Vampire Watch - The Keystone Watches

Audemars Piguet Royal Oak Chronograph Vampire Watch

Audemars Piguet Royal Oak Chronograph Vampire Watch

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Audemars Piguet - Audemars Piguet Black Ceramic Royal Oak Perpetual Calendar Watch - The Keystone Watches

Audemars Piguet Black Ceramic Royal Oak Perpetual Calendar Watch

Audemars Piguet Black Ceramic Royal Oak Perpetual Calendar Watch

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Rolex - Rolex Rose Gold Yacht-Master Rainbow Watch Ref. 116695 - The Keystone Watches

Rolex Rose Gold Yacht-Master Rainbow Watch Ref. 116695

Rolex Rose Gold Yacht-Master Rainbow Watch Ref. 116695

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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.

Stay in touch.

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