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Patek Philippe - Patek Philippe Platinum World Time Watch Ref. 5110 - The Keystone Watches

Patek Philippe Platinum World Time Watch Ref. 5110

Patek Philippe Platinum World Time Watch Ref. 5110

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Patek Philippe - Patek Philippe White Gold World Time Chronograph Ref. 5930G - The Keystone Watches

Patek Philippe White Gold World Time Chronograph Ref. 5930G

Patek Philippe White Gold World Time Chronograph Ref. 5930G

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Patek Philippe - Patek Philippe Platinum Chronograph Watch Ref. 5070 - The Keystone Watches

Patek Philippe Platinum Chronograph Watch Ref. 5070

Patek Philippe Platinum Chronograph Watch Ref. 5070

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Patek Philippe - Patek Philippe Yellow Gold Golden Circle Ref. 3604 - The Keystone Watches

Patek Philippe Yellow Gold Golden Circle Ref. 3604

Patek Philippe Yellow Gold Golden Circle Ref. 3604

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Patek Philippe - Patek Philippe Yellow Gold World Time Watch Ref. 5110 - The Keystone Watches

Patek Philippe Yellow Gold World Time Watch Ref. 5110

Patek Philippe Yellow Gold World Time Watch Ref. 5110

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Patek Philippe - Patek Philippe Yellow Gold Watch Ref. 3854 - The Keystone Watches

Patek Philippe Yellow Gold Watch Ref. 3854

Patek Philippe Yellow Gold Watch Ref. 3854

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Patek Philippe - Patek Philippe Rose Gold Annual Calendar Chronograph Ref. 5905R - The Keystone Watches

Patek Philippe Rose Gold Annual Calendar Chronograph Ref. 5905R

Patek Philippe Rose Gold Annual Calendar Chronograph Ref. 5905R

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Patek Philippe - Patek Philippe White Gold Watch Ref. 3729 with Onyx Dial - The Keystone Watches

Patek Philippe White Gold Watch Ref. 3729 with Onyx Dial

Patek Philippe White Gold Watch Ref. 3729 with Onyx Dial

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Patek Philippe - Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 5140 - The Keystone Watches

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 5140

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 5140

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Patek Philippe - Patek Philippe White Gold Perpetual Calendar Watch Ref. 5140 - The Keystone Watches

Patek Philippe White Gold Perpetual Calendar Watch Ref. 5140

Patek Philippe White Gold Perpetual Calendar Watch Ref. 5140

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

Patek Philippe Yellow Gold Perpetual Calendar Ref. 5970

Patek Philippe Yellow Gold Perpetual Calendar Ref. 5970

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Patek Philippe - Patek Philippe White Gold Annual Calendar Watch Ref. 5205 - The Keystone Watches

Patek Philippe White Gold Annual Calendar Watch Ref. 5205

Patek Philippe White Gold Annual Calendar Watch Ref. 5205

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Patek Philippe - Patek Philippe Platinum Chronograph Watch Ref. 5070, Double Sealed - The Keystone Watches

Patek Philippe Platinum Chronograph Watch Ref. 5070, Double Sealed

Patek Philippe Platinum Chronograph Watch Ref. 5070, Double Sealed

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Patek Philippe White Gold Sector Dial Annual Calendar Watch Ref. 5396

Patek Philippe White Gold Sector Dial Annual Calendar Watch Ref. 5396

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

Patek Philippe Platinum Perpetual Split Seconds Chronograph Watch Ref. 5204

Patek Philippe Platinum Perpetual Split Seconds Chronograph Watch Ref. 5204

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Patek Philippe - Patek Philippe Rose Gold Gondolo Ref. 5098 - The Keystone Watches

Patek Philippe Rose Gold Gondolo Ref. 5098

Patek Philippe Rose Gold Gondolo Ref. 5098

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Patek Philippe - Patek Philippe Yellow Gold Nautellipse Nautilus Ref. 3770 Yellow Gold - The Keystone Watches

Patek Philippe Yellow Gold Nautellipse Nautilus Ref. 3770 Yellow Gold

Patek Philippe Yellow Gold Nautellipse Nautilus Ref. 3770 Yellow Gold

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Patek Philippe - Patek Philippe White Gold Chronograph Ref. 5070G, Unworn & Single Sealed - The Keystone Watches

Patek Philippe White Gold Chronograph Ref. 5070G, Unworn & Single Sealed

Patek Philippe White Gold Chronograph Ref. 5070G, Unworn & Single Sealed

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Patek Philippe - Patek Philippe White Gold World Time Watch Ref. 5130 - The Keystone Watches

Patek Philippe White Gold World Time Watch Ref. 5130

Patek Philippe White Gold World Time Watch Ref. 5130

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

Patek Philippe Yellow Gold Lapis Watch Ref. 3578

Patek Philippe Yellow Gold Lapis Watch Ref. 3578

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Patek Philippe - Patek Philippe Yellow Gold Nautilus Ref. 3800 with Box and Papers - The Keystone Watches

Patek Philippe Yellow Gold Nautilus Ref. 3800 with Box and Papers

Patek Philippe Yellow Gold Nautilus Ref. 3800 with Box and Papers

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Patek Philippe - Patek Philippe Platinum Handcrafts Cloisonne Peacock Watch, Ref. 5077 Unworn and Double Sealed - The Keystone Watches

Patek Philippe Platinum Handcrafts Cloisonne Peacock Watch, Ref. 5077 Unworn and Double Sealed

Patek Philippe Platinum Handcrafts Cloisonne Peacock Watch, Ref. 5077 Unworn and Double Sealed

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Chronograph Diamond Watch Ref. 5271 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Chronograph Diamond Watch Ref. 5271

Patek Philippe Platinum Perpetual Calendar Chronograph Diamond Watch Ref. 5271

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Patek Philippe - Patek Philippe Rose Gold Nautilus Watch Ref. 5723 with Factory Ruby Dial and Bezel - The Keystone Watches

Patek Philippe Rose Gold Nautilus Watch Ref. 5723 with Factory Ruby Dial and Bezel

Patek Philippe Rose Gold Nautilus Watch Ref. 5723 with Factory Ruby Dial and Bezel

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Patek Philippe - Patek Philippe Platinum Calatrava Watch Ref. 5298 with Baguette Diamonds - The Keystone Watches

Patek Philippe Platinum Calatrava Watch Ref. 5298 with Baguette Diamonds

Patek Philippe Platinum Calatrava Watch Ref. 5298 with Baguette Diamonds

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

Patek Philippe Platinum Perpetual Calendar Chrono Watch Ref. 5270

Patek Philippe Platinum Perpetual Calendar Chrono Watch Ref. 5270

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Patek Philippe - Patek Philippe Yellow Gold Nautilus Diamond Emerald Watch Ref. 3800/5 - The Keystone Watches

Patek Philippe Yellow Gold Nautilus Diamond Emerald Watch Ref. 3800/5

Patek Philippe Yellow Gold Nautilus Diamond Emerald Watch Ref. 3800/5

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Patek Philippe - Patek Philippe Rose Gold Perpetual Calendar Minute Repeater Watch Ref. 5074 - The Keystone Watches

Patek Philippe Rose Gold Perpetual Calendar Minute Repeater Watch Ref. 5074

Patek Philippe Rose Gold Perpetual Calendar Minute Repeater Watch Ref. 5074

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Patek Philippe - Patek Philippe Rose Gold Grand Complication Minute Repeater Ref. 5208 - The Keystone Watches

Patek Philippe Rose Gold Grand Complication Minute Repeater Ref. 5208

Patek Philippe Rose Gold Grand Complication Minute Repeater Ref. 5208

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Patek Philippe - Patek Philippe Steel Aquanaut Ref. 5065 - The Keystone Watches

Patek Philippe Steel Aquanaut Ref. 5065

Patek Philippe Steel Aquanaut Ref. 5065

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Patek Philippe - Patek Philippe Platinum Calatrava Sapphire Dial Watch Ref. 3796 - The Keystone Watches

Patek Philippe Platinum Calatrava Sapphire Dial Watch Ref. 3796

Patek Philippe Platinum Calatrava Sapphire Dial Watch Ref. 3796

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Patek Philippe - Patek Philippe White Gold Automatic Watch Ref. 3844 - The Keystone Watches

Patek Philippe White Gold Automatic Watch Ref. 3844

Patek Philippe White Gold Automatic Watch Ref. 3844

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

Patek Philippe White Gold Perpetual Calendar Chronograph Watch Ref. 5970

Patek Philippe White Gold Perpetual Calendar Chronograph Watch Ref. 5970

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Patek Philippe - Patek Philippe Rose Gold Perpetual Calendar Watch Ref. 3970 with Rare Brown, Breguet Numeral Dial - The Keystone Watches

Patek Philippe Rose Gold Perpetual Calendar Watch Ref. 3970 with Rare Brown, Breguet Numeral Dial

Patek Philippe Rose Gold Perpetual Calendar Watch Ref. 3970 with Rare Brown, Breguet Numeral Dial

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Patek Philippe - Patek Philippe White Gold Calatrava Watch Ref. 3759 with Original Diamond Bezel and Dial - The Keystone Watches

Patek Philippe White Gold Calatrava Watch Ref. 3759 with Original Diamond Bezel and Dial

Patek Philippe White Gold Calatrava Watch Ref. 3759 with Original Diamond Bezel and Dial

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Patek Philippe - Patek Philippe Rose Gold Perpetual Minute Repeater Watch Ref. 5074 - The Keystone Watches

Patek Philippe Rose Gold Perpetual Minute Repeater Watch Ref. 5074

Patek Philippe Rose Gold Perpetual Minute Repeater Watch Ref. 5074

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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)

"Price upon request"
 
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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