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Patek Philippe - Patek Philippe Steel Automatic Watch Ref. 3580 - The Keystone Watches

Patek Philippe Steel Automatic Watch Ref. 3580

Patek Philippe Steel Automatic Watch Ref. 3580

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Calatrava 3445 - The Keystone Watches

Patek Philippe Yellow Gold Calatrava 3445

Patek Philippe Yellow Gold Calatrava 3445

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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 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 Aquanaut Chronograph Watch Ref. 5968 - The Keystone Watches

Patek Philippe Aquanaut Chronograph Watch Ref. 5968

Patek Philippe Aquanaut Chronograph Watch Ref. 5968

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Patek Philippe - Patek Philippe White Gold Nautilus Chronograph Watch Ref. 5976 - The Keystone Watches

Patek Philippe White Gold Nautilus Chronograph Watch Ref. 5976

Patek Philippe White Gold Nautilus Chronograph Watch Ref. 5976

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Patek Philippe - Patek Philippe White Gold Automatic Watch Ref. 3445 - The Keystone Watches

Patek Philippe White Gold Automatic Watch Ref. 3445

Patek Philippe White Gold Automatic Watch Ref. 3445

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Gondolo Watch Ref. 5030J - The Keystone Watches

Patek Philippe Yellow Gold Gondolo Watch Ref. 5030J

Patek Philippe Yellow Gold Gondolo Watch Ref. 5030J

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Patek Philippe - Patek Philippe Rose Gold Nautilus Chronograph Watch Ref. 5980 - The Keystone Watches

Patek Philippe Rose Gold Nautilus Chronograph Watch Ref. 5980

Patek Philippe Rose Gold Nautilus Chronograph Watch Ref. 5980

Sold Out

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

Patek Philippe Nautilus Diamond Watch Ref. 3800

Patek Philippe Nautilus Diamond Watch Ref. 3800

Sold Out

 
Patek Philippe - Patek Philippe White Gold Calatrava Watch Ref. 3919 - The Keystone Watches

Patek Philippe White Gold Calatrava Watch Ref. 3919

Patek Philippe White Gold Calatrava Watch Ref. 3919

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Ellipse Watch Ref. 3546 - The Keystone Watches

Patek Philippe Yellow Gold Ellipse Watch Ref. 3546

Patek Philippe Yellow Gold Ellipse Watch Ref. 3546

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Patek Philippe - Patek Philippe Yellow Gold Calatrava Watch Ref. 3796 - The Keystone Watches

Patek Philippe Yellow Gold Calatrava Watch Ref. 3796

Patek Philippe Yellow Gold Calatrava Watch Ref. 3796

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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

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Patek Philippe - Patek Philippe Aquanaut Jumbo Watch Ref. 5065 with Original Box and Paper - The Keystone Watches

Patek Philippe Aquanaut Jumbo Watch Ref. 5065 with Original Box and Paper

Patek Philippe Aquanaut Jumbo Watch Ref. 5065 with Original Box and Paper

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Patek Philippe - Patek Philippe Platinum Chronograph Watch Ref. 5170 - The Keystone Watches

Patek Philippe Platinum Chronograph Watch Ref. 5170

Patek Philippe Platinum Chronograph Watch Ref. 5170

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Patek Philippe - Patek Philippe White Gold Perpetual Watch Ref. 5320 - The Keystone Watches

Patek Philippe White Gold Perpetual Watch Ref. 5320

Patek Philippe White Gold Perpetual Watch Ref. 5320

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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 Watch Ref. 3800 - The Keystone Watches

Patek Philippe Nautilus Watch Ref. 3800

Patek Philippe Nautilus Watch Ref. 3800

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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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Patek Philippe - Patek Philippe White Gold Diamond & Sapphire Watch Ref. 3319 - The Keystone Watches

Patek Philippe White Gold Diamond & Sapphire Watch Ref. 3319

Patek Philippe White Gold Diamond & Sapphire Watch Ref. 3319

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Patek Philippe - Patek Philippe Neptune Power Reserve Moonphase Ref. 5085 - The Keystone Watches

Patek Philippe Neptune Power Reserve Moonphase Ref. 5085

Patek Philippe Neptune Power Reserve Moonphase Ref. 5085

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Patek Philippe - Patek Philippe Nautilus Travel Time Chronograph Watch Ref. 5990 - The Keystone Watches

Patek Philippe Nautilus Travel Time Chronograph Watch Ref. 5990

Patek Philippe Nautilus Travel Time Chronograph Watch Ref. 5990

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Patek Philippe - Patek Philippe Rose Gold Split Seconds Perpetual Calendar Chrono Ref. 5204 in Unworn Condition - The Keystone Watches

Patek Philippe Rose Gold Split Seconds Perpetual Calendar Chrono Ref. 5204 in Unworn Condition

Patek Philippe Rose Gold Split Seconds Perpetual Calendar Chrono Ref. 5204 in Unworn Condition

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Patek Philippe - Patek Philippe Rose Gold Calatrava Ref. 5196 - The Keystone Watches

Patek Philippe Rose Gold Calatrava Ref. 5196

Patek Philippe Rose Gold Calatrava Ref. 5196

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Patek Philippe - Patek Philippe Yellow Gold Chronograph Ref. 5070 - The Keystone Watches

Patek Philippe Yellow Gold Chronograph Ref. 5070

Patek Philippe Yellow Gold Chronograph Ref. 5070

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Patek Philippe - Patek Philippe Aquanaut Rose Gold on Strap Ref. 5167R - The Keystone Watches

Patek Philippe Aquanaut Rose Gold on Strap Ref. 5167R

Patek Philippe Aquanaut Rose Gold on Strap Ref. 5167R

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Patek Philippe - Patek Philippe Yellow Gold Chronograph Watch, Ref. 5170 - The Keystone Watches

Patek Philippe Yellow Gold Chronograph Watch, Ref. 5170

Patek Philippe Yellow Gold Chronograph Watch, Ref. 5170

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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 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 Whtie Gold Baguette Diamond Watch Ref. 3625 - The Keystone Watches

Patek Philippe Whtie Gold Baguette Diamond Watch Ref. 3625

Patek Philippe Whtie Gold Baguette Diamond Watch Ref. 3625

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Patek Philippe - Patek Philippe Steel Watch Ref. Ref. 3574 - The Keystone Watches

Patek Philippe Steel Watch Ref. Ref. 3574

Patek Philippe Steel Watch Ref. Ref. 3574

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Patek Philippe - Patek Philippe Aquanaut Jumbo Watch Ref. 5167 - The Keystone Watches

Patek Philippe Aquanaut Jumbo Watch Ref. 5167

Patek Philippe Aquanaut Jumbo Watch Ref. 5167

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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 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 Nautilus Jumbo Watch Ref. 5711 - The Keystone Watches

Patek Philippe Nautilus Jumbo Watch Ref. 5711

Patek Philippe Nautilus Jumbo Watch Ref. 5711

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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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