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Audemars Piguet - Audemars Piguet Royal Oak Platinum Skeletonized Watch, Ref. 15203 - The Keystone Watches

Audemars Piguet Royal Oak Platinum Skeletonized Watch, Ref. 15203

Audemars Piguet Royal Oak Platinum Skeletonized Watch, Ref. 15203

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Patek Philippe - Patek Philippe Platinum World Time Cloisonne Watch Ref. 5131 - The Keystone Watches

Patek Philippe Platinum World Time Cloisonne Watch Ref. 5131

Patek Philippe Platinum World Time Cloisonne Watch Ref. 5131

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Audemars Piguet - Audemars Piguet Skeletonized Emerald Diamond Watch, Piece Unique - The Keystone Watches

Audemars Piguet Skeletonized Emerald Diamond Watch, Piece Unique

Audemars Piguet Skeletonized Emerald Diamond Watch, Piece Unique

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Patek Philippe - Patek Philippe Platinum Minute Repeating Tourbillon Watch Ref. 5016 - The Keystone Watches

Patek Philippe Platinum Minute Repeating Tourbillon Watch Ref. 5016

Patek Philippe Platinum Minute Repeating Tourbillon Watch Ref. 5016

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

Patek Philippe Platinum Perpetual Split Seconds Chrono Watch Ref. 5204

Patek Philippe Platinum Perpetual Split Seconds Chrono Watch Ref. 5204

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Patek Philippe - Patek Philippe Platinum Minute Repeater Black Dial Watch Ref. 5078 - The Keystone Watches

Patek Philippe Platinum Minute Repeater Black Dial Watch Ref. 5078

Patek Philippe Platinum Minute Repeater Black Dial Watch Ref. 5078

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5013 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5013

Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5013

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Patek Philippe - Patek Philippe Platinum Monopusher Split Seconds Chrono Ref. 5959 - The Keystone Watches

Patek Philippe Platinum Monopusher Split Seconds Chrono Ref. 5959

Patek Philippe Platinum Monopusher Split Seconds Chrono Ref. 5959

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Cartier - Cartier Platinum Tank Mechanical Watch - The Keystone Watches

Cartier Platinum Tank Mechanical Watch

Cartier Platinum Tank Mechanical Watch

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Cartier - Cartier Platinum Baignoire Watch, 1960 - The Keystone Watches

Cartier Platinum Baignoire Watch, 1960

Cartier Platinum Baignoire Watch, 1960

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A. Lange & Sohne - A. Lange & Sohne Platinum Datograph Baguette Diamond Up Down Watch Ref. 405.835 - The Keystone Watches

A. Lange & Sohne Platinum Datograph Baguette Diamond Up Down Watch Ref. 405.835

A. Lange & Sohne Platinum Datograph Baguette Diamond Up Down Watch Ref. 405.835

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Minute Repeater Ref. 5074, Unworn Condition - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Minute Repeater Ref. 5074, Unworn Condition

Patek Philippe Platinum Perpetual Calendar Minute Repeater Ref. 5074, Unworn Condition

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IWC - IWC Platinum Calibre 853 Mechanical Wind Watch - The Keystone Watches

IWC Platinum Calibre 853 Mechanical Wind Watch

IWC Platinum Calibre 853 Mechanical Wind Watch

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FP Journe - F.P Journe Platinum Octa Automatique Diamond Watch - The Keystone Watches

F.P Journe Platinum Octa Automatique Diamond Watch

F.P Journe Platinum Octa Automatique Diamond Watch

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Patek Philippe - Patek Philippe Platinum Minute Repeater Watch Ref. 5033 - The Keystone Watches

Patek Philippe Platinum Minute Repeater Watch Ref. 5033

Patek Philippe Platinum Minute Repeater Watch Ref. 5033

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Patek Philippe - Patek Philippe Platinum Grand Complications Minute Repeater Watch Ref. 5207 - The Keystone Watches

Patek Philippe Platinum Grand Complications Minute Repeater Watch Ref. 5207

Patek Philippe Platinum Grand Complications Minute Repeater Watch Ref. 5207

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Patek Philippe - Patek Philippe Platinum Split Seconds Perpetual Hand-Engraved Watch Ref. 5951 - The Keystone Watches

Patek Philippe Platinum Split Seconds Perpetual Hand-Engraved Watch Ref. 5951

Patek Philippe Platinum Split Seconds Perpetual Hand-Engraved Watch Ref. 5951

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Patek Philippe - Patek Philippe Platinum Split Seconds Perpetual Monopoissor Chronograph Watch Ref. 5951 - The Keystone Watches

Patek Philippe Platinum Split Seconds Perpetual Monopoissor Chronograph Watch Ref. 5951

Patek Philippe Platinum Split Seconds Perpetual Monopoissor Chronograph Watch Ref. 5951

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Patek Philippe - Patek Philippe Platinum Perpetual Split Seconds Chronograph Watch Ref. 5004 - The Keystone Watches

Patek Philippe Platinum Perpetual Split Seconds Chronograph Watch Ref. 5004

Patek Philippe Platinum Perpetual Split Seconds Chronograph Watch Ref. 5004

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Advanced Research Watch Ref. 5550 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Advanced Research Watch Ref. 5550

Patek Philippe Platinum Perpetual Calendar Advanced Research Watch Ref. 5550

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Patek Philippe - Patek Philippe Platinum Advanced Research Annual Calendar Watch Ref. 5450 - The Keystone Watches

Patek Philippe Platinum Advanced Research Annual Calendar Watch Ref. 5450

Patek Philippe Platinum Advanced Research Annual Calendar Watch Ref. 5450

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Cartier - Cartier Platinum Vendome Watch, 1974 - The Keystone Watches

Cartier Platinum Vendome Watch, 1974

Cartier Platinum Vendome Watch, 1974

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Patek Philippe - Patek Philippe Platinum Grand Complication Watch Ref. 5207, Unworn & Double Sealed - The Keystone Watches

Patek Philippe Platinum Grand Complication Watch Ref. 5207, Unworn & Double Sealed

Patek Philippe Platinum Grand Complication Watch Ref. 5207, Unworn & Double Sealed

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Cartier - Cartier Platinum Santos Automatic Watch, 1979 - The Keystone Watches

Cartier Platinum Santos Automatic Watch, 1979

Cartier Platinum Santos Automatic Watch, 1979

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Cartier - Cartier Platinum Baignoire Watch, 1966 - The Keystone Watches

Cartier Platinum Baignoire Watch, 1966

Cartier Platinum Baignoire Watch, 1966

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Audemars Piguet - Audemars Piguet Platinum John Schaeffer Watch - The Keystone Watches

Audemars Piguet Platinum John Schaeffer Watch

Audemars Piguet Platinum John Schaeffer Watch

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Patek Philippe - Patek Philippe Platinum Minute Repeating Tourbillon Watch Ref. 5016 - The Keystone Watches

Patek Philippe Platinum Minute Repeating Tourbillon Watch Ref. 5016

Patek Philippe Platinum Minute Repeating Tourbillon Watch Ref. 5016

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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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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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Rolex - Rolex Platinum Cosmograph Daytona Baguette Diamond Watch Ref. 116576 - The Keystone Watches

Rolex Platinum Cosmograph Daytona Baguette Diamond Watch Ref. 116576

Rolex Platinum Cosmograph Daytona Baguette Diamond Watch Ref. 116576

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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 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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Rolex - Rolex Platinum Day-Date Diamond Watch Ref. 18366 - The Keystone Watches

Rolex Platinum Day-Date Diamond Watch Ref. 18366

Rolex Platinum Day-Date Diamond Watch Ref. 18366

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Rolex - Rolex Platinum Day-Date Mother of Pearl Watch Ref. 18366 - The Keystone Watches

Rolex Platinum Day-Date Mother of Pearl Watch Ref. 18366

Rolex Platinum Day-Date Mother of Pearl Watch Ref. 18366

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Patek Philippe - Patek Philippe Platinum Minute Repeater Enamel Dial Watch Ref. 5078 - The Keystone Watches

Patek Philippe Platinum Minute Repeater Enamel Dial Watch Ref. 5078

Patek Philippe Platinum Minute Repeater Enamel Dial Watch Ref. 5078

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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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