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Patek Philippe - Patek Philippe Rectangular Platinum & Baguette Diamond Watch Ref. 5007 - The Keystone Watches

Patek Philippe Rectangular Platinum & Baguette Diamond Watch Ref. 5007

Patek Philippe Rectangular Platinum & Baguette Diamond Watch Ref. 5007

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Patek Philippe - Patek Philippe Yellow Gold Calatrava, Ref. 2526 Retailed by Serpico Y Laino - The Keystone Watches

Patek Philippe Yellow Gold Calatrava, Ref. 2526 Retailed by Serpico Y Laino

Patek Philippe Yellow Gold Calatrava, Ref. 2526 Retailed by Serpico Y Laino

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Patek Philippe - Patek Philippe Yellow Gold Ellipse Automatic Watch, Ref. 3589 - The Keystone Watches

Patek Philippe Yellow Gold Ellipse Automatic Watch, Ref. 3589

Patek Philippe Yellow Gold Ellipse Automatic Watch, Ref. 3589

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Patek Philippe - Patek Philippe Yellow Gold TV-Shaped, Cushion Automatic Watch Ref. 3604, Retailed by Gubelin - The Keystone Watches

Patek Philippe Yellow Gold TV-Shaped, Cushion Automatic Watch Ref. 3604, Retailed by Gubelin

Patek Philippe Yellow Gold TV-Shaped, Cushion Automatic Watch Ref. 3604, Retailed by Gubelin

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Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 3940

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 3940

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 3940

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Patek Philippe - Patek Philippe Yellow Gold Calatrava Watch Ref. 2551 - The Keystone Watches

Patek Philippe Yellow Gold Calatrava Watch Ref. 2551

Patek Philippe Yellow Gold Calatrava Watch Ref. 2551

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

Patek Philippe Stainless Steel Watch Ref. 3574

Patek Philippe Stainless Steel Watch Ref. 3574

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Patek Philippe - Patek Philippe Stainless Steel Calatrava Watch Ref. 5565 - The Keystone Watches

Patek Philippe Stainless Steel Calatrava Watch Ref. 5565

Patek Philippe Stainless Steel Calatrava Watch Ref. 5565

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Patek Philippe - Patek Philippe Yellow Gold Oversized Watch Ref. 2511, 1954 - The Keystone Watches

Patek Philippe Yellow Gold Oversized Watch Ref. 2511, 1954

Patek Philippe Yellow Gold Oversized Watch Ref. 2511, 1954

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Patek Philippe - Patek Philippe Yellow Gold Jumbo Nautilus Watch Ref. 3700 with Archive Paper - The Keystone Watches

Patek Philippe Yellow Gold Jumbo Nautilus Watch Ref. 3700 with Archive Paper

Patek Philippe Yellow Gold Jumbo Nautilus Watch Ref. 3700 with Archive Paper

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

Patek Philippe Platinum Perpetual Split Seconds Chrono Watch Ref. 5204

Patek Philippe Platinum Perpetual Split Seconds Chrono Watch Ref. 5204

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

Patek Philippe White Gold Nautilus Baguette Diamond Watch Ref. 3800

Patek Philippe White Gold Nautilus Baguette Diamond Watch Ref. 3800

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Patek Philippe - Patek Philippe Platinum Minute Repeater Black Dial Watch Ref. 5078 - The Keystone Watches

Patek Philippe Platinum Minute Repeater Black Dial Watch Ref. 5078

Patek Philippe Platinum Minute Repeater Black Dial Watch Ref. 5078

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Patek Philippe - Patek Philippe Yellow Gold Nautilus Watch Ref 3800 - The Keystone Watches

Patek Philippe Yellow Gold Nautilus Watch Ref 3800

Patek Philippe Yellow Gold Nautilus Watch Ref 3800

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Patek Philippe - Patek Philippe Rose Gold Aquanaut Watch Ref. 5164 - The Keystone Watches

Patek Philippe Rose Gold Aquanaut Watch Ref. 5164

Patek Philippe Rose Gold Aquanaut Watch Ref. 5164

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Patek Philippe - Patek Philippe Rose Gold Mechanical Watch - The Keystone Watches

Patek Philippe Rose Gold Mechanical Watch

Patek Philippe Rose Gold Mechanical Watch

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Patek Philippe - Patek Philippe White Gold Perpetual Calendar Watch Ref. 5160, Retailed by Tiffany & Co. - The Keystone Watches

Patek Philippe White Gold Perpetual Calendar Watch Ref. 5160, Retailed by Tiffany & Co.

Patek Philippe White Gold Perpetual Calendar Watch Ref. 5160, Retailed by Tiffany & Co.

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

Patek Philippe White Gold Perpetual Calendar Automatic Watch Ref. 5140

Patek Philippe White Gold Perpetual Calendar Automatic Watch Ref. 5140

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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 Platinum Perpetual Calendar Minute Repeater Watch Ref. 5074, One of Only Two Known - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5074, One of Only Two Known

Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5074, One of Only Two Known

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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 Perpetual Hand-Engraved Watch Ref. 5160 - The Keystone Watches

Patek Philippe Yellow Gold Perpetual Hand-Engraved Watch Ref. 5160

Patek Philippe Yellow Gold Perpetual Hand-Engraved Watch Ref. 5160

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New Arrivals Preview
 
Rolex Yellow Gold Queen Midas Watch Ref. 4314 with Lapis and Diamond Dial (New Arrival)

Rolex Yellow Gold Queen Midas Watch Ref. 4314 with Lapis and Diamond Dial (New Arrival)

Rolex Yellow Gold Queen Midas Watch Ref. 4314 with Lapis and Diamond Dial (New Arrival)

$38,000 USD
 
Patek Philippe White Gold Baguette Diamond Watch Ref. 3540 (New Arrival)

Patek Philippe White Gold Baguette Diamond Watch Ref. 3540 (New Arrival)

Patek Philippe White Gold Baguette Diamond Watch Ref. 3540 (New Arrival)

$30,000 USD
 
Vacheron Constantin Yellow Gold Chronograph Watch Ref. 4178 with Important Provenance (New Arrival)

Vacheron Constantin Yellow Gold Chronograph Watch Ref. 4178 with Important Provenance (New Arrival)

Vacheron Constantin Yellow Gold Chronograph Watch Ref. 4178 with Important Provenance (New Arrival)

$60,000 USD
 
Breguet Cushion Shaped Diver 200m Watch (New Arrival)

Breguet Cushion Shaped Diver 200m Watch (New Arrival)

Breguet Cushion Shaped Diver 200m Watch (New Arrival)

$58,000 USD
 
Audemars Piguet White Gold Rectangular Watch with Lapis Watch (New Arrival)

Audemars Piguet White Gold Rectangular Watch with Lapis Watch (New Arrival)

Audemars Piguet White Gold Rectangular Watch with Lapis Watch (New Arrival)

$18,000 USD
 
Cartier Yellow Gold Tank Normale Bracelet Watch  Ref. 78092 (New Arrival)

Cartier Yellow Gold Tank Normale Bracelet Watch Ref. 78092 (New Arrival)

Cartier Yellow Gold Tank Normale Bracelet Watch Ref. 78092 (New Arrival)

$36,000 USD
 
Cartier - Cartier Yellow Gold Tank Reverso (New Arrival) - The Keystone Watches

Cartier Yellow Gold Tank Reverso (New Arrival)

Cartier Yellow Gold Tank Reverso (New Arrival)

$34,500 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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