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Patek Philippe - Patek Philippe Yellow Gold Nautilus Ref. 3800J - The Keystone Watches

Patek Philippe Yellow Gold Nautilus Ref. 3800J

Patek Philippe Yellow Gold Nautilus Ref. 3800J

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

Patek Philippe White Gold Mechanical Watch

Patek Philippe White Gold Mechanical Watch

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Patek Philippe - Patek Philippe Yellow Gold Calatrava Ref. 3919 on a Bracelet - The Keystone Watches

Patek Philippe Yellow Gold Calatrava Ref. 3919 on a Bracelet

Patek Philippe Yellow Gold Calatrava Ref. 3919 on a Bracelet

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Patek Philippe - Patek Philippe White Gold Bracelet Watch Ref. 3649 with Onyx Dial - The Keystone Watches

Patek Philippe White Gold Bracelet Watch Ref. 3649 with Onyx Dial

Patek Philippe White Gold Bracelet Watch Ref. 3649 with Onyx Dial

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Patek Philippe - Patek Philippe Platinum Annual Calendar Chronograph Ref. 5960P - The Keystone Watches

Patek Philippe Platinum Annual Calendar Chronograph Ref. 5960P

Patek Philippe Platinum Annual Calendar Chronograph Ref. 5960P

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Patek Philippe - Patek Philippe Yellow Gold Ellipse Ref. 3987 - The Keystone Watches

Patek Philippe Yellow Gold Ellipse Ref. 3987

Patek Philippe Yellow Gold Ellipse Ref. 3987

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Patek Philippe Yellow Gold Calatrava Watch Ref. 565

Patek Philippe Yellow Gold Calatrava Watch Ref. 565

Patek Philippe Yellow Gold Calatrava Watch Ref. 565

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Patek Philippe - Patek Philippe Yellow Gold Calatrava Watch Ref. 2526 - The Keystone Watches

Patek Philippe Yellow Gold Calatrava Watch Ref. 2526

Patek Philippe Yellow Gold Calatrava Watch Ref. 2526

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Patek Philippe - Patek Philippe Yellow Gold Nautilus Watch Ref. 3800/103 - The Keystone Watches

Patek Philippe Yellow Gold Nautilus Watch Ref. 3800/103

Patek Philippe Yellow Gold Nautilus Watch Ref. 3800/103

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Patek Philippe - Patek Philippe White Gold Elliipse Watch Ref. 3548 - The Keystone Watches

Patek Philippe White Gold Elliipse Watch Ref. 3548

Patek Philippe White Gold Elliipse Watch Ref. 3548

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Patek Philippe - Patek Philippe Ellipse Skeleton - The Keystone Watches

Patek Philippe Ellipse Skeleton

Patek Philippe Ellipse Skeleton

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Patek Philippe - Patek Philippe Yellow Gold Vintage Watch Ref. 3858 - The Keystone Watches

Patek Philippe Yellow Gold Vintage Watch Ref. 3858

Patek Philippe Yellow Gold Vintage Watch Ref. 3858

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Patek Philippe - Patek Philippe White Gold Chronograph Ref. 5170G - The Keystone Watches

Patek Philippe White Gold Chronograph Ref. 5170G

Patek Philippe White Gold Chronograph Ref. 5170G

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

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5970

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5970

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Patek Philippe - Patek Philippe Yellow Gold Nautilus Ref. 3800 with Factory Diamond and Ruby Dial - The Keystone Watches

Patek Philippe Yellow Gold Nautilus Ref. 3800 with Factory Diamond and Ruby Dial

Patek Philippe Yellow Gold Nautilus Ref. 3800 with Factory Diamond and Ruby Dial

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Patek Philippe - Patek Philippe Yellow Gold Nautilus Ref. 3800/105 with Pave Diamond and Emerald - The Keystone Watches

Patek Philippe Yellow Gold Nautilus Ref. 3800/105 with Pave Diamond and Emerald

Patek Philippe Yellow Gold Nautilus Ref. 3800/105 with Pave Diamond and Emerald

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Patek Philippe - Patek Philippe Yellow Gold Nautilus Ref. 3800 with Factory Diamond and Ruby Dial - The Keystone Watches

Patek Philippe Yellow Gold Nautilus Ref. 3800 with Factory Diamond and Ruby Dial

Patek Philippe Yellow Gold Nautilus Ref. 3800 with Factory Diamond and Ruby Dial

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Patek Philippe Rose Gold Chronograph Ref. 1579

Patek Philippe Rose Gold Chronograph Ref. 1579

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Patek Philippe Yellow Gold Calatrava Ref. 534 with Silver Sector Dial

Patek Philippe Yellow Gold Calatrava Ref. 534 with Silver Sector Dial

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Patek Philippe - Patek Philippe Steel Aquanaut First Series Watch Ref. 5060 - The Keystone Watches

Patek Philippe Steel Aquanaut First Series Watch Ref. 5060

Patek Philippe Steel Aquanaut First Series Watch Ref. 5060

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Patek Philippe - Patek Philippe White Gold Travel Time Ref. 5524G - The Keystone Watches

Patek Philippe White Gold Travel Time Ref. 5524G

Patek Philippe White Gold Travel Time Ref. 5524G

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

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

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

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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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