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Patek Philippe - Patek Philippe Steel Tonneau-Shaped Watch Ref. 3579 - The Keystone Watches

Patek Philippe Steel Tonneau-Shaped Watch Ref. 3579

Patek Philippe Steel Tonneau-Shaped Watch Ref. 3579

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Patek Philippe - Patek Philippe White Gold Lapis Bracelet Watch Ref. 3578, with Original Hang Tag - The Keystone Watches

Patek Philippe White Gold Lapis Bracelet Watch Ref. 3578, with Original Hang Tag

Patek Philippe White Gold Lapis Bracelet Watch Ref. 3578, with Original Hang Tag

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

Patek Philippe Platinum Annual Calendar Chronograph Watch Ref. 5960

Patek Philippe Platinum Annual Calendar Chronograph Watch Ref. 5960

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Patek Philippe - Patek Philippe Stainless Steel Nautilus ref 3800 - The Keystone Watches

Patek Philippe Stainless Steel Nautilus ref 3800

Patek Philippe Stainless Steel Nautilus ref 3800

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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

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Patek Philippe - Patek Philippe White Gold World Time Watch Ref. 5230 - The Keystone Watches

Patek Philippe White Gold World Time Watch Ref. 5230

Patek Philippe White Gold World Time Watch Ref. 5230

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5270 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5270

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5270

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Patek Philippe - Patek Philippe White Gold Tonneau Watch from 1927 - The Keystone Watches

Patek Philippe White Gold Tonneau Watch from 1927

Patek Philippe White Gold Tonneau Watch from 1927

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Patek Philippe - Patek Philippe Rose Gold Cloisonne World Time Ref. 5131 - The Keystone Watches

Patek Philippe Rose Gold Cloisonne World Time Ref. 5131

Patek Philippe Rose Gold Cloisonne World Time Ref. 5131

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5970 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5970

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5970

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Patek Philippe - Patek Philippe Platinum 10-Day Tourbillon Watch Ref. 5101 - The Keystone Watches

Patek Philippe Platinum 10-Day Tourbillon Watch Ref. 5101

Patek Philippe Platinum 10-Day Tourbillon Watch Ref. 5101

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Patek Philippe - Patek Philippe White Gold Ellipse Watch Ref. 3648, Retailed by Somazzi - The Keystone Watches

Patek Philippe White Gold Ellipse Watch Ref. 3648, Retailed by Somazzi

Patek Philippe White Gold Ellipse Watch Ref. 3648, Retailed by Somazzi

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Patek Philippe - Patek Philippe White Gold Unsual Strap Watch Ref. 4183 - The Keystone Watches

Patek Philippe White Gold Unsual Strap Watch Ref. 4183

Patek Philippe White Gold Unsual Strap Watch Ref. 4183

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Patek Philippe - Patek Philippe Yellow Gold Perpetual Calendar Chrono Watch Ref. 5970 - The Keystone Watches

Patek Philippe Yellow Gold Perpetual Calendar Chrono Watch Ref. 5970

Patek Philippe Yellow Gold Perpetual Calendar Chrono Watch Ref. 5970

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Patek Philippe - Patek Philippe Yellow Gold Lapis Bracelet Watch Ref. 3578 - The Keystone Watches

Patek Philippe Yellow Gold Lapis Bracelet Watch Ref. 3578

Patek Philippe Yellow Gold Lapis Bracelet Watch Ref. 3578

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Patek Philippe - Patek Philippe White Gold Calatrava Watch Ref. 6000 - The Keystone Watches

Patek Philippe White Gold Calatrava Watch Ref. 6000

Patek Philippe White Gold Calatrava Watch Ref. 6000

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Patek Philippe - Patek Philippe White Gold Automatic Diamond Watch Ref. 3563 - The Keystone Watches

Patek Philippe White Gold Automatic Diamond Watch Ref. 3563

Patek Philippe White Gold Automatic Diamond Watch Ref. 3563

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Patek Philippe - Patek Philippe Yellow Gold Travel Time Watch Ref. 2597 - The Keystone Watches

Patek Philippe Yellow Gold Travel Time Watch Ref. 2597

Patek Philippe Yellow Gold Travel Time Watch Ref. 2597

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Patek Philippe - Patek Philippe White Gold Bracelet Watch, Ref. 3266 - The Keystone Watches

Patek Philippe White Gold Bracelet Watch, Ref. 3266

Patek Philippe White Gold Bracelet Watch, Ref. 3266

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Patek Philippe - Patek Philippe Steel Nautilus Moonphase Watch Ref. 3712 with Original Box and Papers - The Keystone Watches

Patek Philippe Steel Nautilus Moonphase Watch Ref. 3712 with Original Box and Papers

Patek Philippe Steel Nautilus Moonphase Watch Ref. 3712 with Original Box and Papers

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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

Sold Out

 
Patek Philippe - Patek Philippe White Gold Perpetual Calendar Chronograph Watch Ref. 5270 - The Keystone Watches

Patek Philippe White Gold Perpetual Calendar Chronograph Watch Ref. 5270

Patek Philippe White Gold Perpetual Calendar Chronograph Watch Ref. 5270

Sold Out

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New Arrivals Preview
 
Cartier Platinum Tank A Guichet Ref. WGTA0236, 2025 Edition (New Arrival)

Cartier Platinum Tank A Guichet Ref. WGTA0236, 2025 Edition (New Arrival)

Cartier Platinum Tank A Guichet Ref. WGTA0236, 2025 Edition (New Arrival)

$150,000 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
 
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
 
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
 
Patek Philiipe White Gold Calatrava Watch Ref. 3919 (New Arrival)

Patek Philiipe White Gold Calatrava Watch Ref. 3919 (New Arrival)

Patek Philiipe White Gold Calatrava Watch Ref. 3919 (New Arrival)

$15,000 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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