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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

Sold Out

 
Patek Philippe - Patek Philippe White Gold Perpetual Calendar Chrono Watch Ref. 5020 - The Keystone Watches

Patek Philippe White Gold Perpetual Calendar Chrono Watch Ref. 5020

Patek Philippe White Gold Perpetual Calendar Chrono Watch Ref. 5020

Sold Out

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

Patek Philippe White Gold Lapis Square Watch Ref. 3578

Patek Philippe White Gold Lapis Square Watch Ref. 3578

Sold Out

 
Patek Philippe - Patek Philippe White Gold Automatic Calatrava Watch Ref. 3588, with Original Box and Papers - The Keystone Watches

Patek Philippe White Gold Automatic Calatrava Watch Ref. 3588, with Original Box and Papers

Patek Philippe White Gold Automatic Calatrava Watch Ref. 3588, with Original Box and Papers

Sold Out

 
Patek Philippe - Patek Philippe White Gold Calatrava Watch Ref. 3802 with Unusual Bracelet - The Keystone Watches

Patek Philippe White Gold Calatrava Watch Ref. 3802 with Unusual Bracelet

Patek Philippe White Gold Calatrava Watch Ref. 3802 with Unusual Bracelet

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Lapis Watch Ref. 3733 - The Keystone Watches

Patek Philippe Yellow Gold Lapis Watch Ref. 3733

Patek Philippe Yellow Gold Lapis Watch Ref. 3733

Sold Out

 
Patek Philippe - Patek Philippe Aquanaut Automatic Watch Ref. 5066 - The Keystone Watches

Patek Philippe Aquanaut Automatic Watch Ref. 5066

Patek Philippe Aquanaut Automatic Watch Ref. 5066

Sold Out

 
Patek Philippe - Patek Philippe Nautlus Automatic Watch Ref. 3800 - The Keystone Watches

Patek Philippe Nautlus Automatic Watch Ref. 3800

Patek Philippe Nautlus Automatic Watch Ref. 3800

Sold Out

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

Patek Philippe Yellow Gold Aquanaut Automatic Watch Ref. 5066

Patek Philippe Yellow Gold Aquanaut Automatic Watch Ref. 5066

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Perpetual Calendar Chronograph Watch Ref. 3970 - The Keystone Watches

Patek Philippe Yellow Gold Perpetual Calendar Chronograph Watch Ref. 3970

Patek Philippe Yellow Gold Perpetual Calendar Chronograph Watch Ref. 3970

Sold Out

 
Patek Philippe - Patek Philippe Nautilus Watch Ref. 3800, with Original Box and Papers - The Keystone Watches

Patek Philippe Nautilus Watch Ref. 3800, with Original Box and Papers

Patek Philippe Nautilus Watch Ref. 3800, with Original Box and Papers

Sold Out

 
Patek Philippe - Patek Philippe Nautilus Jumbo Watch Ref. 3700 - The Keystone Watches

Patek Philippe Nautilus Jumbo Watch Ref. 3700

Patek Philippe Nautilus Jumbo Watch Ref. 3700

Sold Out

 
Patek Philippe - Patek Philippe White Gold Square Watch Ref. 3490 - The Keystone Watches

Patek Philippe White Gold Square Watch Ref. 3490

Patek Philippe White Gold Square Watch Ref. 3490

Sold Out

 
Patek Philippe - Patek Philippe Steel Calatrava Watch Ref. 3509 with Original Box and Papers - The Keystone Watches

Patek Philippe Steel Calatrava Watch Ref. 3509 with Original Box and Papers

Patek Philippe Steel Calatrava Watch Ref. 3509 with Original Box and Papers

Sold Out

 
Patek Philippe - Patek Philippe Steel 150th Anniversary Calatrava Watch Ref. 3718 - The Keystone Watches

Patek Philippe Steel 150th Anniversary Calatrava Watch Ref. 3718

Patek Philippe Steel 150th Anniversary Calatrava Watch Ref. 3718

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Patek Philippe - Patek Philippe Aquanaut Blue Dial Watch Ref. 5066, Made for the Japanese Market - The Keystone Watches

Patek Philippe Aquanaut Blue Dial Watch Ref. 5066, Made for the Japanese Market

Patek Philippe Aquanaut Blue Dial Watch Ref. 5066, Made for the Japanese Market

Sold Out

 
Patek Philippe - Patek Philippe Aquanaut Blue Dial Watch Ref. 5066, Made for the Japanese Market - The Keystone Watches

Patek Philippe Aquanaut Blue Dial Watch Ref. 5066, Made for the Japanese Market

Patek Philippe Aquanaut Blue Dial Watch Ref. 5066, Made for the Japanese Market

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Patek Philippe - Patek Philippe White Gold Baguette Diamond Watch Ref. 3540 - The Keystone Watches

Patek Philippe White Gold Baguette Diamond Watch Ref. 3540

Patek Philippe White Gold Baguette Diamond Watch Ref. 3540

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Perpetual Calendar Chronograph Watch Ref. 2499 - The Keystone Watches

Patek Philippe Yellow Gold Perpetual Calendar Chronograph Watch Ref. 2499

Patek Philippe Yellow Gold Perpetual Calendar Chronograph Watch Ref. 2499

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 3448 - The Keystone Watches

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 3448

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 3448

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Perpetual Calendar Pocket Watch - The Keystone Watches

Patek Philippe Yellow Gold Perpetual Calendar Pocket Watch

Patek Philippe Yellow Gold Perpetual Calendar Pocket Watch

Sold Out

 
Patek Philippe - Patek Philippe Nautilus Watch Ref. 3800, with Original Box and Papers - The Keystone Watches

Patek Philippe Nautilus Watch Ref. 3800, with Original Box and Papers

Patek Philippe Nautilus Watch Ref. 3800, with Original Box and Papers

Sold Out

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New Arrivals Preview
 
Audemars Piguet John Shaeffer Star Wheel Minute Repeater Ref. 25881OR (New Arrival)

Audemars Piguet John Shaeffer Star Wheel Minute Repeater Ref. 25881OR (New Arrival)

Audemars Piguet John Shaeffer Star Wheel Minute Repeater Ref. 25881OR (New Arrival)

$300,000 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
 
Audemars Piguet Royal Oak Dual Time Watch Ref. 25730 with Bright Yellow Dial (New Arrival)

Audemars Piguet Royal Oak Dual Time Watch Ref. 25730 with Bright Yellow Dial (New Arrival)

Audemars Piguet Royal Oak Dual Time Watch Ref. 25730 with Bright Yellow Dial (New Arrival)

$105,000 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
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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