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Patek Philippe - Patek Philippe Rose Gold Perpetual Minute Repeater Watch Ref. 5074, Double Sealed - The Keystone Watches

Patek Philippe Rose Gold Perpetual Minute Repeater Watch Ref. 5074, Double Sealed

Patek Philippe Rose Gold Perpetual Minute Repeater Watch Ref. 5074, Double Sealed

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Audemars Piguet Rose Gold Nick Faldo Royal Oak Ref. 15097

Audemars Piguet Rose Gold Nick Faldo Royal Oak Ref. 15097

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Patek Philippe White Gold Calatrava Ref. 3591

Patek Philippe White Gold Calatrava Ref. 3591

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Rolex Yellow Gold Day-Date Ref. 18238 with Pave Diamonds and Sapphire Markers

Rolex Yellow Gold Day-Date Ref. 18238 with Pave Diamonds and Sapphire Markers

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Piaget Yellow Gold Link Bracelet Watch Ref. 1001

Piaget Yellow Gold Link Bracelet Watch Ref. 1001

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

Patek Philippe Platinum Perpetual Calendar Split Seconds Watch Ref. 5204

Patek Philippe Platinum Perpetual Calendar Split Seconds Watch Ref. 5204

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Cartier - Cartier Yellow Gold Tank Louis Ref. 1140 - The Keystone Watches

Cartier Yellow Gold Tank Louis Ref. 1140

Cartier Yellow Gold Tank Louis Ref. 1140

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Piaget White Gold Mechanical Watch Ref. 9151

Piaget White Gold Mechanical Watch Ref. 9151

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Cartier - Cartier Yellow Gold Cristallor - The Keystone Watches

Cartier Yellow Gold Cristallor

Cartier Yellow Gold Cristallor

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Cartier - Cartier Yellow Gold Tank Normale Watch, European Watch & Clock - The Keystone Watches

Cartier Yellow Gold Tank Normale Watch, European Watch & Clock

Cartier Yellow Gold Tank Normale Watch, European Watch & Clock

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Patek Philippe Steel Nautilus Ref. 3712

Patek Philippe Steel Nautilus Ref. 3712

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Franck Muller White Gold Double Mystery with Black Diamonds and Sapphires

Franck Muller White Gold Double Mystery with Black Diamonds and Sapphires

Franck Muller White Gold Double Mystery with Black Diamonds and Sapphires

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Patek Philippe Yellow Gold Cufflinks with the Khanjar Emblem of Oman

Patek Philippe Yellow Gold Cufflinks with the Khanjar Emblem of Oman

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Patek Philippe White Gold Calatrava Ref. 3563 with Blue Marker Sigma Dial

Patek Philippe White Gold Calatrava Ref. 3563 with Blue Marker Sigma Dial

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Patek Philippe Yellow Gold Calatrava Ref. 2428

Patek Philippe Yellow Gold Calatrava Ref. 2428

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

Patek Philippe Rose Gold Perpetual Calendar Chronograph Ref. 3970

Patek Philippe Rose Gold Perpetual Calendar Chronograph Ref. 3970

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Audemars Piguet Yellow Gold Skeleton Watch, 1950s

Audemars Piguet Yellow Gold Skeleton Watch, 1950s

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Audemars Piguet White Gold Automatic Watch Ref. 5279

Audemars Piguet White Gold Automatic Watch Ref. 5279

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Patek Philippe Yellow Gold Pocket Watch Ref. 763

Patek Philippe Yellow Gold Pocket Watch Ref. 763

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Vintage Vacheron Constantin White Gold Diamond Watch

Vintage Vacheron Constantin White Gold Diamond Watch

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Patek Philippe - Patek Philippe Rose Gold Celestial Watch Ref. 6102 - The Keystone Watches

Patek Philippe Rose Gold Celestial Watch Ref. 6102

Patek Philippe Rose Gold Celestial Watch Ref. 6102

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Rolex Yellow Gold Date Ref. 1503 with Original Warranty (NEW ARRIVAL)

Rolex Yellow Gold Date Ref. 1503 with Original Warranty (NEW ARRIVAL)

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New Arrivals Preview
 
Cartier Tank Coussin Bamboo Ref. 78102 (New Arrival)

Cartier Tank Coussin Bamboo Ref. 78102 (New Arrival)

Cartier Tank Coussin Bamboo Ref. 78102 (New Arrival)

$125,000 USD
 
Cartier Tank Allongee Elongated, Circa 1940 (New Arrival)

Cartier Tank Allongee Elongated, Circa 1940 (New Arrival)

Cartier Tank Allongee Elongated, Circa 1940 (New Arrival)

$62,000 USD
 
Patek Philippe White Gold Rectangular Art Deco Watch (New Arrival)

Patek Philippe White Gold Rectangular Art Deco Watch (New Arrival)

Patek Philippe White Gold Rectangular Art Deco Watch (New Arrival)

$55,000 USD
 
Cartier Platinum Tank Watch Ref. 16111 (New Arrival)

Cartier Platinum Tank Watch Ref. 16111 (New Arrival)

Cartier Platinum Tank Watch Ref. 16111 (New Arrival)

$21,000 USD
 
Patek Philippe Yellow Gold Chronograph Watch Ref. 591, Incredible Original Condition (New Arrival)

Patek Philippe Yellow Gold Chronograph Watch Ref. 591, Incredible Original Condition (New Arrival)

Patek Philippe Yellow Gold Chronograph Watch Ref. 591, Incredible Original Condition (New Arrival)

$175,000 USD
 
Patek Philippe Yellow Gold Enamel Dial Calatrava Watch Ref. 2526 (New Arrival)

Patek Philippe Yellow Gold Enamel Dial Calatrava Watch Ref. 2526 (New Arrival)

Patek Philippe Yellow Gold Enamel Dial Calatrava Watch Ref. 2526 (New Arrival)

$70,000 USD
 
Piaget Yellow Gold Lapis Lazuli & Jade Cuff Watch (New Arrivals)

Piaget Yellow Gold Lapis Lazuli & Jade Cuff Watch (New Arrivals)

Piaget Yellow Gold Lapis Lazuli & Jade Cuff Watch (New Arrivals)

$48,000 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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