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Patek Philippe - Patek Philippe Nautilus Watch Ref. 3800 - The Keystone Watches

Patek Philippe Nautilus Watch Ref. 3800

Patek Philippe Nautilus Watch Ref. 3800

Sold Out

 
Patek Philippe - Patek Philippe Nautilus Watch Ref. 3800 - The Keystone Watches

Patek Philippe Nautilus Watch Ref. 3800

Patek Philippe Nautilus Watch Ref. 3800

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Gondolo Watch Ref. 5010 - The Keystone Watches

Patek Philippe Yellow Gold Gondolo Watch Ref. 5010

Patek Philippe Yellow Gold Gondolo Watch Ref. 5010

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Patek Philippe - Patek Philippe Nautilus Two Tone Ref. 5980/1AR - The Keystone Watches

Patek Philippe Nautilus Two Tone Ref. 5980/1AR

Patek Philippe Nautilus Two Tone Ref. 5980/1AR

Sold Out

 
Patek Philippe - Patek Philippe Rose Gold Nautilus Watch Ref. 5711 - The Keystone Watches

Patek Philippe Rose Gold Nautilus Watch Ref. 5711

Patek Philippe Rose Gold Nautilus Watch Ref. 5711

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Patek Philippe - Patek Philippe Steel Calatrava Watch Ref. 3418 - The Keystone Watches

Patek Philippe Steel Calatrava Watch Ref. 3418

Patek Philippe Steel Calatrava Watch Ref. 3418

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Patek Philippe - Patek Philippe Rose Gold Calatrava Watch Ref. 4897 - The Keystone Watches

Patek Philippe Rose Gold Calatrava Watch Ref. 4897

Patek Philippe Rose Gold Calatrava Watch Ref. 4897

Sold Out

 
Patek Philippe - Patek Philippe White Gold Perpetual Calendar Watch Ref. 5040 - The Keystone Watches

Patek Philippe White Gold Perpetual Calendar Watch Ref. 5040

Patek Philippe White Gold Perpetual Calendar Watch Ref. 5040

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

Patek Philippe White Gold Perpetual Calendar Chrono Watch Ref. 5970

Patek Philippe White Gold Perpetual Calendar Chrono Watch Ref. 5970

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

Patek Philippe Platinum Perpetual Diamond Chrono Watch Ref. 5271

Patek Philippe Platinum Perpetual Diamond Chrono Watch Ref. 5271

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Patek Philippe - Patek Philippe Yellow Gold Automatic Watch Ref. 3558 Retailed by Tiffany & Co. - The Keystone Watches

Patek Philippe Yellow Gold Automatic Watch Ref. 3558 Retailed by Tiffany & Co.

Patek Philippe Yellow Gold Automatic Watch Ref. 3558 Retailed by Tiffany & Co.

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Patek Philippe - Patek Philippe Rose Gold Perpetual Calendar Watch Ref. 5040 Retailed by Tiffany & Co. - The Keystone Watches

Patek Philippe Rose Gold Perpetual Calendar Watch Ref. 5040 Retailed by Tiffany & Co.

Patek Philippe Rose Gold Perpetual Calendar Watch Ref. 5040 Retailed by Tiffany & Co.

Sold Out

 
Patek Philippe - Patek Philippe White Gold Annual Calendar Regulator Watch Ref. 5235 - The Keystone Watches

Patek Philippe White Gold Annual Calendar Regulator Watch Ref. 5235

Patek Philippe White Gold Annual Calendar Regulator Watch Ref. 5235

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Patek Philippe - Patek Philippe White Gold Nautilus Baguette Diamond Watch Ref. 5724 - The Keystone Watches

Patek Philippe White Gold Nautilus Baguette Diamond Watch Ref. 5724

Patek Philippe White Gold Nautilus Baguette Diamond Watch Ref. 5724

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Patek Philippe - Patek Philippe Rose Gold Chronograph Baguette Watch Ref. 5961 - The Keystone Watches

Patek Philippe Rose Gold Chronograph Baguette Watch Ref. 5961

Patek Philippe Rose Gold Chronograph Baguette Watch Ref. 5961

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Patek Philippe - Patek Philippe White Gold Perpetual Calendar Watch Ref. 3940 - The Keystone Watches

Patek Philippe White Gold Perpetual Calendar Watch Ref. 3940

Patek Philippe White Gold Perpetual Calendar Watch Ref. 3940

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Patek Philippe - Patek Philippe White Gold Calatrava Watch Ref. 5119 - The Keystone Watches

Patek Philippe White Gold Calatrava Watch Ref. 5119

Patek Philippe White Gold Calatrava Watch Ref. 5119

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Aquanaut Watch Ref. 5066 - The Keystone Watches

Patek Philippe Yellow Gold Aquanaut Watch Ref. 5066

Patek Philippe Yellow Gold Aquanaut Watch Ref. 5066

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Patek Philippe - Patek Philippe Nautilus Chronograph Ref. 5980/1R - The Keystone Watches

Patek Philippe Nautilus Chronograph Ref. 5980/1R

Patek Philippe Nautilus Chronograph Ref. 5980/1R

Sold Out

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

Patek Philippe Nautilus Moonphase Watch Ref. 5712

Patek Philippe Nautilus Moonphase Watch Ref. 5712

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Patek Philippe - Patek Philippe Two-Tone Nautilus Watch Ref. 3800 - The Keystone Watches

Patek Philippe Two-Tone Nautilus Watch Ref. 3800

Patek Philippe Two-Tone Nautilus Watch Ref. 3800

Sold Out

 
Patek Philippe - Patek Philippe White Gold Calatrava Watch Ref. 570 - The Keystone Watches

Patek Philippe White Gold Calatrava Watch Ref. 570

Patek Philippe White Gold Calatrava Watch Ref. 570

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

Patek Philippe White Gold Annual Calendar Moonphase Watch Ref. 5205

Patek Philippe White Gold Annual Calendar Moonphase Watch Ref. 5205

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

Patek Philippe Aquanaut Watch Ref. 5065

Patek Philippe Aquanaut Watch Ref. 5065

Sold Out

 
Patek Philippe - Patek Philippe Rose Gold Calatrava Watch Ref. 3802 - The Keystone Watches

Patek Philippe Rose Gold Calatrava Watch Ref. 3802

Patek Philippe Rose Gold Calatrava Watch Ref. 3802

Sold Out

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

Patek Philippe Platinum Perpetual Baguette Diamond Watch Ref. 5271

Patek Philippe Platinum Perpetual Baguette Diamond Watch Ref. 5271

Sold Out

 
Patek Philippe - Patek Philippe White Gold Perpetual Ref. 5160 - The Keystone Watches

Patek Philippe White Gold Perpetual Ref. 5160

Patek Philippe White Gold Perpetual Ref. 5160

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Annual Calendar Watch Ref. 5146 - The Keystone Watches

Patek Philippe Yellow Gold Annual Calendar Watch Ref. 5146

Patek Philippe Yellow Gold Annual Calendar Watch Ref. 5146

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Nautilus Watch Ref. 3700 - The Keystone Watches

Patek Philippe Yellow Gold Nautilus Watch Ref. 3700

Patek Philippe Yellow Gold Nautilus Watch Ref. 3700

Sold Out

 
Patek Philippe - Patek Philippe Stainless Steel Pilot Watch Ref. 5522 - The Keystone Watches

Patek Philippe Stainless Steel Pilot Watch Ref. 5522

Patek Philippe Stainless Steel Pilot Watch Ref. 5522

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Patek Philippe - Patek Philippe Two-Tone Nautilus Watch Ref. 3800 - The Keystone Watches

Patek Philippe Two-Tone Nautilus Watch Ref. 3800

Patek Philippe Two-Tone Nautilus Watch Ref. 3800

Sold Out

 
Patek Philippe - Patek Philippe White Gold Nautilus Watch Ref. 3900 - The Keystone Watches

Patek Philippe White Gold Nautilus Watch Ref. 3900

Patek Philippe White Gold Nautilus Watch Ref. 3900

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Nautilus Diamond & Ruby Watch Ref. 3800 - The Keystone Watches

Patek Philippe Yellow Gold Nautilus Diamond & Ruby Watch Ref. 3800

Patek Philippe Yellow Gold Nautilus Diamond & Ruby Watch Ref. 3800

Sold Out

 
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

Sold Out

 
Patek Philippe - Patek Philippe White Gold Nautilus Watch Ref. 5719 - The Keystone Watches

Patek Philippe White Gold Nautilus Watch Ref. 5719

Patek Philippe White Gold Nautilus Watch Ref. 5719

Sold Out

 
Patek Philippe - Patek Philippe White Gold Annual Calendar Watch Ref. 5146G - The Keystone Watches

Patek Philippe White Gold Annual Calendar Watch Ref. 5146G

Patek Philippe White Gold Annual Calendar Watch Ref. 5146G

Sold Out

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New Arrivals Preview
 
Breguet Yellow Gold Classique Ref. 3210 (NEW ARRIVAL)

Breguet Yellow Gold Classique Ref. 3210 (NEW ARRIVAL)

Breguet Yellow Gold Classique Ref. 3210 (NEW ARRIVAL)

$7,200 USD
 
Louis Vuitton - Louis Vuitton Green Ceramic Monterey II (New Arrival) - The Keystone Watches

Louis Vuitton Green Ceramic Monterey II (New Arrival)

Louis Vuitton Green Ceramic Monterey II (New Arrival)

$8,800 USD
 

Piaget White Gold Altiplano Ref. 90122 with Diamonds and Sapphires (New Arrival)

Piaget White Gold Altiplano Ref. 90122 with Diamonds and Sapphires (New Arrival)

$17,750 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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