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A. Lange & Sohne - A. Lange & Sohne Platinum Datograph Up/Down Watch Ref. 405.035 - The Keystone Watches

A. Lange & Sohne Platinum Datograph Up/Down Watch Ref. 405.035

A. Lange & Sohne Platinum Datograph Up/Down Watch Ref. 405.035

Sold Out

 
A. Lange & Sohne - A. Lange & Sohne Platinum 1815 Tourbillon Watch Ref. 730.025 - The Keystone Watches

A. Lange & Sohne Platinum 1815 Tourbillon Watch Ref. 730.025

A. Lange & Sohne Platinum 1815 Tourbillon Watch Ref. 730.025

Sold Out

 
Cartier - Cartier Platinum Crash Diamond Watch - The Keystone Watches

Cartier Platinum Crash Diamond Watch

Cartier Platinum Crash Diamond Watch

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Patek Philippe - Patek Philippe Platinum Gondolo Tiffany & Co. Ref. 5135 - The Keystone Watches

Patek Philippe Platinum Gondolo Tiffany & Co. Ref. 5135

Patek Philippe Platinum Gondolo Tiffany & Co. Ref. 5135

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Piaget - Piaget Platinum Altiplano Ultra Thin Watch Ref. G0A27009 - The Keystone Watches

Piaget Platinum Altiplano Ultra Thin Watch Ref. G0A27009

Piaget Platinum Altiplano Ultra Thin Watch Ref. G0A27009

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Vacheron Constantin - Vacheron Constantin Platinum Historiques American 1921 Watch Ref. 82035 - The Keystone Watches

Vacheron Constantin Platinum Historiques American 1921 Watch Ref. 82035

Vacheron Constantin Platinum Historiques American 1921 Watch Ref. 82035

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A. Lange & Sohne - A. Lange & Sohne Platinum Datograph Watch Ref. 403.035 - The Keystone Watches

A. Lange & Sohne Platinum Datograph Watch Ref. 403.035

A. Lange & Sohne Platinum Datograph Watch Ref. 403.035

Sold Out

 
IWC - IWC Platinum Da Vinci Perpetual Calendar Split Chrono Watch Ref. 3751 - The Keystone Watches

IWC Platinum Da Vinci Perpetual Calendar Split Chrono Watch Ref. 3751

IWC Platinum Da Vinci Perpetual Calendar Split Chrono Watch Ref. 3751

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Rolex - Rolex Platinum Day-Date Mother of Pearl Watch Ref. 18206 - The Keystone Watches

Rolex Platinum Day-Date Mother of Pearl Watch Ref. 18206

Rolex Platinum Day-Date Mother of Pearl Watch Ref. 18206

Sold Out

 
Roger Dubuis - Roger Dubuis Platinum Sympathy Perpetual Calendar Retrograde Watch - The Keystone Watches

Roger Dubuis Platinum Sympathy Perpetual Calendar Retrograde Watch

Roger Dubuis Platinum Sympathy Perpetual Calendar Retrograde Watch

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Patek Philippe - Patek Philippe Platinum Annual Calendar Chrono Watch Ref. 5905P - The Keystone Watches

Patek Philippe Platinum Annual Calendar Chrono Watch Ref. 5905P

Patek Philippe Platinum Annual Calendar Chrono Watch Ref. 5905P

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Patek Philippe - Patek Philippe Platinum Calatrava Watch Ref. 5196P - The Keystone Watches

Patek Philippe Platinum Calatrava Watch Ref. 5196P

Patek Philippe Platinum Calatrava Watch Ref. 5196P

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Patek Philippe - Patek Philippe Platinum Rare Handcrafts Enamel Watch Ref. 5088P - The Keystone Watches

Patek Philippe Platinum Rare Handcrafts Enamel Watch Ref. 5088P

Patek Philippe Platinum Rare Handcrafts Enamel Watch Ref. 5088P

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Cartier - Cartier Platinum Asymmetric Tank Limited Edition Watch, Ref. 2488 - The Keystone Watches

Cartier Platinum Asymmetric Tank Limited Edition Watch, Ref. 2488

Cartier Platinum Asymmetric Tank Limited Edition Watch, Ref. 2488

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Chrono Watch Ref. 5970P - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Chrono Watch Ref. 5970P

Patek Philippe Platinum Perpetual Calendar Chrono Watch Ref. 5970P

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

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5140

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5140

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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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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

Sold Out

 
Patek Philippe - Patek Philippe Platinum Minute Repeater Perpetual Calendar Watch Ref. 5216 - The Keystone Watches

Patek Philippe Platinum Minute Repeater Perpetual Calendar Watch Ref. 5216

Patek Philippe Platinum Minute Repeater Perpetual Calendar Watch Ref. 5216

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Patek Philippe - Vintage Patek Philippe Platinum Rectangular Diamond Watch Ref. 425 - The Keystone Watches

Vintage Patek Philippe Platinum Rectangular Diamond Watch Ref. 425

Vintage Patek Philippe Platinum Rectangular Diamond Watch Ref. 425

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Audemars Piguet - Audemars Piguet Platinum Quantieme Perpetual Automatique Watch - The Keystone Watches

Audemars Piguet Platinum Quantieme Perpetual Automatique Watch

Audemars Piguet Platinum Quantieme Perpetual Automatique Watch

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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.

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