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Patek Philippe - Patek Philippe Annual Calendar Chronograph Watch Ref. 5905 - The Keystone Watches

Patek Philippe Annual Calendar Chronograph Watch Ref. 5905

Patek Philippe Annual Calendar Chronograph Watch Ref. 5905

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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

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Patek Philippe - Patek Philippe White Gold Diamond Watch, 1970s - The Keystone Watches

Patek Philippe White Gold Diamond Watch, 1970s

Patek Philippe White Gold Diamond Watch, 1970s

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Patek Philippe - Patek Philippe Steel Aquanaut Watch Ref. 5167 with Original Box and Papers - The Keystone Watches

Patek Philippe Steel Aquanaut Watch Ref. 5167 with Original Box and Papers

Patek Philippe Steel Aquanaut Watch Ref. 5167 with Original Box and Papers

Sold Out

 
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

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Patek Philippe - Patek Philippe Platinum Minute Repeating Tourbillon Watch Ref. 3939 - The Keystone Watches

Patek Philippe Platinum Minute Repeating Tourbillon Watch Ref. 3939

Patek Philippe Platinum Minute Repeating Tourbillon Watch Ref. 3939

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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 White Dial Watch Ref. 3800 - The Keystone Watches

Patek Philippe Nautilus White Dial Watch Ref. 3800

Patek Philippe Nautilus White Dial Watch Ref. 3800

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Patek Philippe - Patek Philippe Steel Aquanaut Jumbo Watch Ref. 5065 with Box and Papers - The Keystone Watches

Patek Philippe Steel Aquanaut Jumbo Watch Ref. 5065 with Box and Papers

Patek Philippe Steel Aquanaut Jumbo Watch Ref. 5065 with Box and Papers

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

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Patek Philippe - Patek Philippe Nautilus Moonphase Watch Ref. 3712 with Original Box and Papers - The Keystone Watches

Patek Philippe Nautilus Moonphase Watch Ref. 3712 with Original Box and Papers

Patek Philippe Nautilus Moonphase Watch Ref. 3712 with Original Box and Papers

Sold Out

 
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

Sold Out

 
Patek Philippe - Patek Philippe White Gold Onyx Dial Watch, Ref. 3733 - The Keystone Watches

Patek Philippe White Gold Onyx Dial Watch, Ref. 3733

Patek Philippe White Gold Onyx Dial Watch, Ref. 3733

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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 Platinum Gondolo Watch, Ref. 5098 - The Keystone Watches

Patek Philippe Platinum Gondolo Watch, Ref. 5098

Patek Philippe Platinum Gondolo Watch, Ref. 5098

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

Patek Philippe Platinum Annual Calendar Chronograph Watch, Ref. 5960

Patek Philippe Platinum Annual Calendar Chronograph Watch, Ref. 5960

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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

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

Patek Philippe Platinum Perpetual Calendar Chrono Baguette Diamond Watch Ref. 5271

Patek Philippe Platinum Perpetual Calendar Chrono Baguette Diamond Watch Ref. 5271

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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 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

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Patek Philippe - Patek Philippe Rose Gold Annual Calendar Watch Ref. 5396 - The Keystone Watches

Patek Philippe Rose Gold Annual Calendar Watch Ref. 5396

Patek Philippe Rose Gold Annual Calendar Watch Ref. 5396

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Patek Philippe - Patek Philippe Steel Calatrava Automatic Watch, Ref. 3466 - The Keystone Watches

Patek Philippe Steel Calatrava Automatic Watch, Ref. 3466

Patek Philippe Steel Calatrava Automatic Watch, Ref. 3466

Sold Out

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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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