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Piaget - Piaget Yellow Gold Diamond Watch, 1960s - The Keystone Watches

Piaget Yellow Gold Diamond Watch, 1960s

Piaget Yellow Gold Diamond Watch, 1960s

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Rolex - Rolex Date Grey Dial Watch Ref. 1500, in Like New Condition - The Keystone Watches

Rolex Date Grey Dial Watch Ref. 1500, in Like New Condition

Rolex Date Grey Dial Watch Ref. 1500, in Like New Condition

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Audemars Piguet - Audemars Piguet Royal Oak A-Series Watch Ref. 5402, Early Low Serial Production - The Keystone Watches

Audemars Piguet Royal Oak A-Series Watch Ref. 5402, Early Low Serial Production

Audemars Piguet Royal Oak A-Series Watch Ref. 5402, Early Low Serial Production

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Piaget - Piaget Yellow Gold Turquoise Diamond Watch, Retailed by Van Cleef & Arpels - The Keystone Watches

Piaget Yellow Gold Turquoise Diamond Watch, Retailed by Van Cleef & Arpels

Piaget Yellow Gold Turquoise Diamond Watch, Retailed by Van Cleef & Arpels

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Piaget - Piaget White Gold Dual Time Hand Engraved Watch - The Keystone Watches

Piaget White Gold Dual Time Hand Engraved Watch

Piaget White Gold Dual Time Hand Engraved Watch

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

Patek Philippe Rose Gold Perpetual Calendar Chronograph Watch Ref. 5970

Patek Philippe Rose Gold Perpetual Calendar Chronograph Watch Ref. 5970

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Patek Philippe - Patek Philippe Rose Gold Nautilus Moonphase Watch Ref. 5712 - The Keystone Watches

Patek Philippe Rose Gold Nautilus Moonphase Watch Ref. 5712

Patek Philippe Rose Gold Nautilus Moonphase Watch Ref. 5712

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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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Piaget - Piaget Yellow Gold Diamond Watch, 1970s - The Keystone Watches

Piaget Yellow Gold Diamond Watch, 1970s

Piaget Yellow Gold Diamond Watch, 1970s

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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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Audemars Piguet - Audemars Piguet White Gold Baguette Diamond Opal Watch - The Keystone Watches

Audemars Piguet White Gold Baguette Diamond Opal Watch

Audemars Piguet White Gold Baguette Diamond Opal Watch

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Rolex - Rolex Yellow Gold Cosmograph Daytona Porcelain Zenith Diamond Watch Ref. 16528 - The Keystone Watches

Rolex Yellow Gold Cosmograph Daytona Porcelain Zenith Diamond Watch Ref. 16528

Rolex Yellow Gold Cosmograph Daytona Porcelain Zenith Diamond Watch Ref. 16528

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Audemars Piguet - Audemars Piguet Platinum Royal Oak Watch - The Keystone Watches

Audemars Piguet Platinum Royal Oak Watch

Audemars Piguet Platinum Royal Oak Watch

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Cartier - Cartier Yellow Gold Panthere Watch - The Keystone Watches

Cartier Yellow Gold Panthere Watch

Cartier Yellow Gold Panthere Watch

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Piaget - Piaget White Gold Diamond Emerald Watch, 1970s - The Keystone Watches

Piaget White Gold Diamond Emerald Watch, 1970s

Piaget White Gold Diamond Emerald Watch, 1970s

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Piaget - Piaget White Gold Diamond Sapphire Watch, 1970s - The Keystone Watches

Piaget White Gold Diamond Sapphire Watch, 1970s

Piaget White Gold Diamond Sapphire Watch, 1970s

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Rolex - Rolex GMT-Master Watch Ref. 1675, with Original Papers - The Keystone Watches

Rolex GMT-Master Watch Ref. 1675, with Original Papers

Rolex GMT-Master Watch Ref. 1675, with Original Papers

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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

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Audemars Piguet - Audemars Piguet Royal Oak Watch Ref. 15202 with Original Box and Papers - The Keystone Watches

Audemars Piguet Royal Oak Watch Ref. 15202 with Original Box and Papers

Audemars Piguet Royal Oak Watch Ref. 15202 with Original Box and Papers

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Piaget - Piaget White Gold Diamond Onyx Watch, 1970s - The Keystone Watches

Piaget White Gold Diamond Onyx Watch, 1970s

Piaget White Gold Diamond Onyx Watch, 1970s

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Audemars Piguet - Audemars Piguet Steel Royal Oak Automatic Watch - The Keystone Watches

Audemars Piguet Steel Royal Oak Automatic Watch

Audemars Piguet Steel Royal Oak Automatic Watch

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Audemars Piguet - Audemars Piguet White Gold Royal Oak Salmon Dial Watch Ref. 15202 - The Keystone Watches

Audemars Piguet White Gold Royal Oak Salmon Dial Watch Ref. 15202

Audemars Piguet White Gold Royal Oak Salmon Dial Watch Ref. 15202

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Audemars Piguet - Audemars Piguet Rose Gold Royal Oak Openworked Skeleton Watch Ref. 15204 - The Keystone Watches

Audemars Piguet Rose Gold Royal Oak Openworked Skeleton Watch Ref. 15204

Audemars Piguet Rose Gold Royal Oak Openworked Skeleton Watch Ref. 15204

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Audemars Piguet - Audemars Piguet Frosted White Gold Royal Oak Watch Ref. 26331 - The Keystone Watches

Audemars Piguet Frosted White Gold Royal Oak Watch Ref. 26331

Audemars Piguet Frosted White Gold Royal Oak Watch Ref. 26331

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Cartier - Cartier White Gold Tortue Monopoussoir Chronograph Watch Ref. 2762 - The Keystone Watches

Cartier White Gold Tortue Monopoussoir Chronograph Watch Ref. 2762

Cartier White Gold Tortue Monopoussoir Chronograph Watch Ref. 2762

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Rolex - Rolex White Gold Day-Date Diamond Watch Ref. 18049 with Original Paper - The Keystone Watches

Rolex White Gold Day-Date Diamond Watch Ref. 18049 with Original Paper

Rolex White Gold Day-Date Diamond Watch Ref. 18049 with Original Paper

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Cartier - Cartier White Gold Baignoire Pink Sapphire Watch - The Keystone Watches

Cartier White Gold Baignoire Pink Sapphire Watch

Cartier White Gold Baignoire Pink Sapphire Watch

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Rolex - Rolex Yellow Gold Cosmograph Daytona Zenith Inverted 6 Watch, Ref. 16518 - The Keystone Watches

Rolex Yellow Gold Cosmograph Daytona Zenith Inverted 6 Watch, Ref. 16518

Rolex Yellow Gold Cosmograph Daytona Zenith Inverted 6 Watch, Ref. 16518

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Rolex - Rolex Cosmograph Daytona Big Red Watch Ref. 6265 - The Keystone Watches

Rolex Cosmograph Daytona Big Red Watch Ref. 6265

Rolex Cosmograph Daytona Big Red Watch Ref. 6265

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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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Vacheron Constantin - Vacheron Constantin White Gold Baguette Diamond Watch - The Keystone Watches

Vacheron Constantin White Gold Baguette Diamond Watch

Vacheron Constantin White Gold Baguette Diamond Watch

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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

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New Arrivals Preview
 
Cartier Platinum Tank A Guichet Ref. WGTA0236, 2025 Edition (New Arrival)

Cartier Platinum Tank A Guichet Ref. WGTA0236, 2025 Edition (New Arrival)

Cartier Platinum Tank A Guichet Ref. WGTA0236, 2025 Edition (New Arrival)

$150,000 USD
 
Patek Philippe White Gold Calatrava Watch Ref. 4189 (New Arrival)

Patek Philippe White Gold Calatrava Watch Ref. 4189 (New Arrival)

Patek Philippe White Gold Calatrava Watch Ref. 4189 (New Arrival)

$9,800 USD
 
Rolex Yellow Gold Day-Date Watch Ref. 1803 with Claw Dial (New Arrival)

Rolex Yellow Gold Day-Date Watch Ref. 1803 with Claw Dial (New Arrival)

Rolex Yellow Gold Day-Date Watch Ref. 1803 with Claw Dial (New Arrival)

$18,750 USD
 
Boucheron - Boucheron Yellow Gold Invisible Set Sapphire Watch (New Arrival) - The Keystone Watches

Boucheron Yellow Gold Invisible Set Sapphire Watch (New Arrival)

Boucheron Yellow Gold Invisible Set Sapphire Watch (New Arrival)

$9,500 USD
 
Rolex - Rolex Yellow Gold Cellini Watch Ref. 4014/8 with Orange Dial (New Arrival) - The Keystone Watches

Rolex Yellow Gold Cellini Watch Ref. 4014/8 with Orange Dial (New Arrival)

Rolex Yellow Gold Cellini Watch Ref. 4014/8 with Orange Dial (New Arrival)

$7,500 USD
 
Rolex Steel Submariner Ref. 5513 with Pumkin Lume (New Arrival)

Rolex Steel Submariner Ref. 5513 with Pumkin Lume (New Arrival)

Rolex Steel Submariner Ref. 5513 with Pumkin Lume (New Arrival)

$15,500 USD
 
Patek Philiipe White Gold Calatrava Watch Ref. 3919 (New Arrival)

Patek Philiipe White Gold Calatrava Watch Ref. 3919 (New Arrival)

Patek Philiipe White Gold Calatrava Watch Ref. 3919 (New Arrival)

$15,000 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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