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Seiko Yellow Gold Astronomical Observatory Chronometer Ref. 4520-8020

Seiko Yellow Gold Astronomical Observatory Chronometer Ref. 4520-8020

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Rolex - Rolex Yellow Gold Day-Date Rainbow Watch Ref. 128348 - The Keystone Watches

Rolex Yellow Gold Day-Date Rainbow Watch Ref. 128348

Rolex Yellow Gold Day-Date Rainbow Watch Ref. 128348

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Audemars Piguet - Audemars Piguet White Gold and Diamond Jules Audemars Watch Ref. 15125BC - The Keystone Watches

Audemars Piguet White Gold and Diamond Jules Audemars Watch Ref. 15125BC

Audemars Piguet White Gold and Diamond Jules Audemars Watch Ref. 15125BC

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Patek Philippe - Patek Philippe Rose Gold Perpetual Calendar Watch Ref. 5140 - The Keystone Watches

Patek Philippe Rose Gold Perpetual Calendar Watch Ref. 5140

Patek Philippe Rose Gold Perpetual Calendar Watch Ref. 5140

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Piaget - Piaget White Gold Bracelet Watch Ref. 9752 - The Keystone Watches

Piaget White Gold Bracelet Watch Ref. 9752

Piaget White Gold Bracelet Watch Ref. 9752

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Piaget - Piaget White Gold Mechancial Watch Turquoise Dial Ref. 924N24 - The Keystone Watches

Piaget White Gold Mechancial Watch Turquoise Dial Ref. 924N24

Piaget White Gold Mechancial Watch Turquoise Dial Ref. 924N24

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Piaget - Piaget White Gold Diamond Opal Watch Ref. 9706 - The Keystone Watches

Piaget White Gold Diamond Opal Watch Ref. 9706

Piaget White Gold Diamond Opal Watch Ref. 9706

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Piaget - Piaget Yellow Gold Tigerseye Diamond Watch Ref. 9826 - The Keystone Watches

Piaget Yellow Gold Tigerseye Diamond Watch Ref. 9826

Piaget Yellow Gold Tigerseye Diamond Watch Ref. 9826

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Piaget - Piaget White Gold Diamond Watch Ref. 77280 - The Keystone Watches

Piaget White Gold Diamond Watch Ref. 77280

Piaget White Gold Diamond Watch Ref. 77280

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Piaget - Piaget White Gold Diamond Bracelet Watch Ref. 925B11 - The Keystone Watches

Piaget White Gold Diamond Bracelet Watch Ref. 925B11

Piaget White Gold Diamond Bracelet Watch Ref. 925B11

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Piaget - Piaget White Gold Diamond Onyx Watch Ref. 9066 - The Keystone Watches

Piaget White Gold Diamond Onyx Watch Ref. 9066

Piaget White Gold Diamond Onyx Watch Ref. 9066

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Piaget - Piaget White Gold Diamond Dial Ref. 9771 - The Keystone Watches

Piaget White Gold Diamond Dial Ref. 9771

Piaget White Gold Diamond Dial Ref. 9771

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Piaget - Piaget White Gold Bracelet Watch with Diamond Bezel and Dial - The Keystone Watches

Piaget White Gold Bracelet Watch with Diamond Bezel and Dial

Piaget White Gold Bracelet Watch with Diamond Bezel and Dial

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Piaget - Piaget White Gold and Yellow Gold Watch with Black and Diamond Dial Ref. 7131 - The Keystone Watches

Piaget White Gold and Yellow Gold Watch with Black and Diamond Dial Ref. 7131

Piaget White Gold and Yellow Gold Watch with Black and Diamond Dial Ref. 7131

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Piaget - Piaget Yellow Gold Bracelet Watch with Diamond Markers - The Keystone Watches

Piaget Yellow Gold Bracelet Watch with Diamond Markers

Piaget Yellow Gold Bracelet Watch with Diamond Markers

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Patek Philippe - Patek Philippe Yellow Gold Annual Calendar Watch Ref. 5146 - The Keystone Watches

Patek Philippe Yellow Gold Annual Calendar Watch Ref. 5146

Patek Philippe Yellow Gold Annual Calendar Watch Ref. 5146

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Piaget - Piaget White Gold Opal Diamond Watch Ref. 9383A6 - The Keystone Watches

Piaget White Gold Opal Diamond Watch Ref. 9383A6

Piaget White Gold Opal Diamond Watch Ref. 9383A6

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A. Lange & Sohne - A. Lange & Sohne Lange 1 Moonphase Ref. 182.086 - The Keystone Watches

A. Lange & Sohne Lange 1 Moonphase Ref. 182.086

A. Lange & Sohne Lange 1 Moonphase Ref. 182.086

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Piaget - Piaget Yellow Gold Ultra-Thin Bracelet Watch - The Keystone Watches

Piaget Yellow Gold Ultra-Thin Bracelet Watch

Piaget Yellow Gold Ultra-Thin Bracelet Watch

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Piaget - Piaget Yellow Gold Baguette Bezel with Pave Dial and Diamonds Bracelet - The Keystone Watches

Piaget Yellow Gold Baguette Bezel with Pave Dial and Diamonds Bracelet

Piaget Yellow Gold Baguette Bezel with Pave Dial and Diamonds Bracelet

$52,000 USD
 
Patek Philippe - Patek Philippe Yellow Gold Perpetual Calendar Retrograde Watch Ref. 5050 - The Keystone Watches

Patek Philippe Yellow Gold Perpetual Calendar Retrograde Watch Ref. 5050

Patek Philippe Yellow Gold Perpetual Calendar Retrograde Watch Ref. 5050

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Rolex - Rolex Steel Pepsi GMT-Master Ref. 1675 - The Keystone Watches

Rolex Steel Pepsi GMT-Master Ref. 1675

Rolex Steel Pepsi GMT-Master Ref. 1675

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Patek Philippe - Patek Philippe Steel Tonneau Ref. 3579 with Original Papers - The Keystone Watches

Patek Philippe Steel Tonneau Ref. 3579 with Original Papers

Patek Philippe Steel Tonneau Ref. 3579 with Original Papers

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Audemars Piguet - Audemars Piguet Two-Tone Royal Oak Moonphase Ref. 25594 - The Keystone Watches

Audemars Piguet Two-Tone Royal Oak Moonphase Ref. 25594

Audemars Piguet Two-Tone Royal Oak Moonphase Ref. 25594

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Patek Philippe - Patek Philippe Chronometro Gondolo 24 Hour Pocket Watch - The Keystone Watches

Patek Philippe Chronometro Gondolo 24 Hour Pocket Watch

Patek Philippe Chronometro Gondolo 24 Hour Pocket Watch

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Patek Philippe - Patek Philippe Platinum Pocket Watch - The Keystone Watches

Patek Philippe Platinum Pocket Watch

Patek Philippe Platinum Pocket Watch

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Patek Philippe - Patek Philippe White & Yellow Gold Pocket Watch - The Keystone Watches

Patek Philippe White & Yellow Gold Pocket Watch

Patek Philippe White & Yellow Gold Pocket Watch

$20,000 USD
 
Piaget - Piaget Yellow Gold Diamond Ruby Watch Ref. 43009A6 - The Keystone Watches

Piaget Yellow Gold Diamond Ruby Watch Ref. 43009A6

Piaget Yellow Gold Diamond Ruby Watch Ref. 43009A6

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Piaget - Piaget White Gold Diamond Opal Watch Ref. 9706D2 - The Keystone Watches

Piaget White Gold Diamond Opal Watch Ref. 9706D2

Piaget White Gold Diamond Opal Watch Ref. 9706D2

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Piaget - Piaget White Gold Opal Diamond Ref. 9706D2 - The Keystone Watches

Piaget White Gold Opal Diamond Ref. 9706D2

Piaget White Gold Opal Diamond Ref. 9706D2

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Piaget - Piaget Yellow Gold Ruby & Diamond Watch Ref. 98170 - The Keystone Watches

Piaget Yellow Gold Ruby & Diamond Watch Ref. 98170

Piaget Yellow Gold Ruby & Diamond Watch Ref. 98170

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Piaget - Piaget White Gold Watch Ref. 4182A6 with Lapis Dial and Diamonds and Sapphires - The Keystone Watches

Piaget White Gold Watch Ref. 4182A6 with Lapis Dial and Diamonds and Sapphires

Piaget White Gold Watch Ref. 4182A6 with Lapis Dial and Diamonds and Sapphires

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Piaget - Piaget White Gold Opal Watch Ref. 4326D23 - The Keystone Watches

Piaget White Gold Opal Watch Ref. 4326D23

Piaget White Gold Opal Watch Ref. 4326D23

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Vacheron Constantin - Vacheron Constantin Steel Pocket Watch - The Keystone Watches

Vacheron Constantin Steel Pocket Watch

Vacheron Constantin Steel Pocket Watch

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Audemars Piguet - Audemars Piguet Two-Tone Royal Oak Ref. 56143 (NEW ARRIVAL) - The Keystone Watches

Audemars Piguet Two-Tone Royal Oak Ref. 56143 (NEW ARRIVAL)

Audemars Piguet Two-Tone Royal Oak Ref. 56143 (NEW ARRIVAL)

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Rolex - Rolex Yellow Gold Day-Date Ref. 1803 with Linen Dial and Box & Papers (NEW ARRIVAL) - The Keystone Watches

Rolex Yellow Gold Day-Date Ref. 1803 with Linen Dial and Box & Papers (NEW ARRIVAL)

Rolex Yellow Gold Day-Date Ref. 1803 with Linen Dial and Box & Papers (NEW ARRIVAL)

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New Arrivals Preview
 
Gerald Genta Fantasy Retro M.10 MOP Mickey Mouse for Hong Kong Disney Watch (New Arrival)

Gerald Genta Fantasy Retro M.10 MOP Mickey Mouse for Hong Kong Disney Watch (New Arrival)

Gerald Genta Fantasy Retro M.10 MOP Mickey Mouse for Hong Kong Disney Watch (New Arrival)

$23,750 USD
 
Vacheron Constantin - Vacheron Constantin Yellow Gold Grand Complication Pocket Watch (NEW ARRIVAL) - The Keystone Watches

Vacheron Constantin Yellow Gold Grand Complication Pocket Watch (NEW ARRIVAL)

Vacheron Constantin Yellow Gold Grand Complication Pocket Watch (NEW ARRIVAL)

$155,000 USD
 

Piaget White Gold Altiplano Ref. 90122 with Diamonds and Sapphires (New Arrival)

Piaget White Gold Altiplano Ref. 90122 with Diamonds and Sapphires (New Arrival)

$17,750 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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