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

Audemars Piguet Platinum John Schaeffer Minute Repeater Watch

Audemars Piguet Platinum John Schaeffer Minute Repeater Watch

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Audemars Piguet - Audemars Piguet Platinum Royal Oak Quantieme Perpetual Skeleton Watch, Ref. 25829PT - The Keystone Watches

Audemars Piguet Platinum Royal Oak Quantieme Perpetual Skeleton Watch, Ref. 25829PT

Audemars Piguet Platinum Royal Oak Quantieme Perpetual Skeleton Watch, Ref. 25829PT

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Audemars Piguet - Audemars Piguet Platinum Royal Oak Anniversary Tourbillon Watch, Ref. 25831 - The Keystone Watches

Audemars Piguet Platinum Royal Oak Anniversary Tourbillon Watch, Ref. 25831

Audemars Piguet Platinum Royal Oak Anniversary Tourbillon Watch, Ref. 25831

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Rolex - Rolex Platinum Day-Date 41mm Watch Ref. 218206 - The Keystone Watches

Rolex Platinum Day-Date 41mm Watch Ref. 218206

Rolex Platinum Day-Date 41mm Watch Ref. 218206

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Cartier - Cartier Platinum Santos Watch, Circa 1920s - The Keystone Watches

Cartier Platinum Santos Watch, Circa 1920s

Cartier Platinum Santos Watch, Circa 1920s

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Rolex - Rolex Platinum Day-Date Diamond Watch Ref. 18346 - The Keystone Watches

Rolex Platinum Day-Date Diamond Watch Ref. 18346

Rolex Platinum Day-Date Diamond Watch Ref. 18346

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Patek Philippe - Patek Philippe Platinum Chronograph Watch Ref. 5170 - The Keystone Watches

Patek Philippe Platinum Chronograph Watch Ref. 5170

Patek Philippe Platinum Chronograph Watch Ref. 5170

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Cartier - Cartier Platinum Tank Cintree Medium Watch, 1920s - The Keystone Watches

Cartier Platinum Tank Cintree Medium Watch, 1920s

Cartier Platinum Tank Cintree Medium Watch, 1920s

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Rolex - Rolex Platinum Day-Date Diamond Watch Ref. 18206 - The Keystone Watches

Rolex Platinum Day-Date Diamond Watch Ref. 18206

Rolex Platinum Day-Date Diamond Watch Ref. 18206

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Cartier - Cartier Platinum Asymmetrical Tank Watch, Piece Unique - The Keystone Watches

Cartier Platinum Asymmetrical Tank Watch, Piece Unique

Cartier Platinum Asymmetrical Tank Watch, Piece Unique

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Patek Philippe - Patek Philippe Platinum Chronograph Watch Ref. 5070, Retailed by Tiffany & Co. - The Keystone Watches

Patek Philippe Platinum Chronograph Watch Ref. 5070, Retailed by Tiffany & Co.

Patek Philippe Platinum Chronograph Watch Ref. 5070, Retailed by Tiffany & Co.

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Patek Philippe - Patek Philippe Platinum Chronograph Watch Ref. 5070 - The Keystone Watches

Patek Philippe Platinum Chronograph Watch Ref. 5070

Patek Philippe Platinum Chronograph Watch Ref. 5070

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Ulysse Nardin - Ulysse Nardin Platinum San Marco Kremlin Cloisonne Dial Watch - The Keystone Watches

Ulysse Nardin Platinum San Marco Kremlin Cloisonne Dial Watch

Ulysse Nardin Platinum San Marco Kremlin Cloisonne Dial Watch

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Ulysse Nardin - Ulysse Nardin Platinum Triple Jack Minute Repeater Watch Ref. 739-20 - The Keystone Watches

Ulysse Nardin Platinum Triple Jack Minute Repeater Watch Ref. 739-20

Ulysse Nardin Platinum Triple Jack Minute Repeater Watch Ref. 739-20

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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

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Jaeger LeCoultre - Jaeger Lecoultre Platinum Reverso Grand Complication Triptyque Watch Ref. 241.6.65 - The Keystone Watches

Jaeger Lecoultre Platinum Reverso Grand Complication Triptyque Watch Ref. 241.6.65

Jaeger Lecoultre Platinum Reverso Grand Complication Triptyque Watch Ref. 241.6.65

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Ulysse Nardin - Ulysse Nardin Freak Vision Platinum Watch Ref. 2505, Limited to 10 Pieces - The Keystone Watches

Ulysse Nardin Freak Vision Platinum Watch Ref. 2505, Limited to 10 Pieces

Ulysse Nardin Freak Vision Platinum Watch Ref. 2505, Limited to 10 Pieces

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Vacheron Constantin - Vacheron Contantin Platinum 333 Watch - The Keystone Watches

Vacheron Contantin Platinum 333 Watch

Vacheron Contantin Platinum 333 Watch

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5270 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5270

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5270

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Vacheron Constantin - Vacheron Constantin Platinum Oversized Strap Watch - The Keystone Watches

Vacheron Constantin Platinum Oversized Strap Watch

Vacheron Constantin Platinum Oversized Strap Watch

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Ulysse Nardin - Ulysse Nardin Platinum Hour Striker Watch Ref. 759-20 - The Keystone Watches

Ulysse Nardin Platinum Hour Striker Watch Ref. 759-20

Ulysse Nardin Platinum Hour Striker Watch Ref. 759-20

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IWC - IWC Platinum Portuguese Skeletonizsed Minute Repeater Watch - The Keystone Watches

IWC Platinum Portuguese Skeletonizsed Minute Repeater Watch

IWC Platinum Portuguese Skeletonizsed Minute Repeater Watch

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5970 Unworn and in Original Seal - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5970 Unworn and in Original Seal

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5970 Unworn and in Original Seal

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Rolex - Rolex Platinum Day-Date 40mm Watch Ref. 228206 - The Keystone Watches

Rolex Platinum Day-Date 40mm Watch Ref. 228206

Rolex Platinum Day-Date 40mm Watch Ref. 228206

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FP Journe - F.P. Journe Platinum Souveraine Tourbillon Watch - The Keystone Watches

F.P. Journe Platinum Souveraine Tourbillon Watch

F.P. Journe Platinum Souveraine Tourbillon Watch

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FP Journe - F.P. Journe Platinum Chronometre Souverain Watch - The Keystone Watches

F.P. Journe Platinum Chronometre Souverain Watch

F.P. Journe Platinum Chronometre Souverain Watch

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Richard Mille - Richard Mille Platinum GMT Tourbillon Watch Ref. RM003 - The Keystone Watches

Richard Mille Platinum GMT Tourbillon Watch Ref. RM003

Richard Mille Platinum GMT Tourbillon Watch Ref. RM003

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Audemars Piguet - Audemars Piguet Platinum Jules Audemars Dual Time Blue Dial - The Keystone Watches

Audemars Piguet Platinum Jules Audemars Dual Time Blue Dial

Audemars Piguet Platinum Jules Audemars Dual Time Blue Dial

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Chrono Sapphire Watch Ref. 5271 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Chrono Sapphire Watch Ref. 5271

Patek Philippe Platinum Perpetual Calendar Chrono Sapphire Watch Ref. 5271

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IWC - IWC Platinum Automatic Watch - The Keystone Watches

IWC Platinum Automatic Watch

IWC Platinum Automatic Watch

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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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Rolex - Rolex Platinum Day-Date Masterpiece Diamond Watch Ref. 18946 - The Keystone Watches

Rolex Platinum Day-Date Masterpiece Diamond Watch Ref. 18946

Rolex Platinum Day-Date Masterpiece Diamond Watch Ref. 18946

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Rolex - Rolex Platinum Day-Date Masterpiece Baguette Diamond Watch Ref. 18946 - The Keystone Watches

Rolex Platinum Day-Date Masterpiece Baguette Diamond Watch Ref. 18946

Rolex Platinum Day-Date Masterpiece Baguette Diamond Watch Ref. 18946

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

Rolex Platinum Day-Date Baguette Diamond Bezel Ref. 18366

Rolex Platinum Day-Date Baguette Diamond Bezel Ref. 18366

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Rolex - Rolex Platinum Day-Date Diamond Watch Ref. 18046 - The Keystone Watches

Rolex Platinum Day-Date Diamond Watch Ref. 18046

Rolex Platinum Day-Date Diamond Watch Ref. 18046

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Cartier - Cartier Platinum Tank Classic Watch - The Keystone Watches

Cartier Platinum Tank Classic Watch

Cartier Platinum Tank Classic Watch

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New Arrivals Preview
 
A. Lange & Sohne White Gold Lange 1 Ref. 101.039 (New Arrival)

A. Lange & Sohne White Gold Lange 1 Ref. 101.039 (New Arrival)

A. Lange & Sohne White Gold Lange 1 Ref. 101.039 (New Arrival)

$29,000 USD
 

Patek Philippe White Gold Golden Ellipse Watch Ref. 3644 on Chain JPE Band (New Arrival)

Patek Philippe White Gold Golden Ellipse Watch Ref. 3644 on Chain JPE Band (New Arrival)

$11,500 USD
 
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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