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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 White Gold Perpetual Calendar Chronograph Watch Ref. 5270, in Unworn Condition - The Keystone Watches

Patek Philippe White Gold Perpetual Calendar Chronograph Watch Ref. 5270, in Unworn Condition

Patek Philippe White Gold Perpetual Calendar Chronograph Watch Ref. 5270, in Unworn Condition

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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 White Gold Perpetual Calendar Retrograde Watch Ref. 5159 - The Keystone Watches

Patek Philippe White Gold Perpetual Calendar Retrograde Watch Ref. 5159

Patek Philippe White Gold Perpetual Calendar Retrograde Watch Ref. 5159

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Patek Philippe - Patek Philippe Yellow Gold Minute Repeater, Ref. 5079J - The Keystone Watches

Patek Philippe Yellow Gold Minute Repeater, Ref. 5079J

Patek Philippe Yellow Gold Minute Repeater, Ref. 5079J

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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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Patek Philippe - Patek Philippe White Gold Celestial Watch Ref. 5102, Unworn - The Keystone Watches

Patek Philippe White Gold Celestial Watch Ref. 5102, Unworn

Patek Philippe White Gold Celestial Watch Ref. 5102, Unworn

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Patek Philippe - Patek Philippe White Gold Perpetual Calendar Ref. 5041 - The Keystone Watches

Patek Philippe White Gold Perpetual Calendar Ref. 5041

Patek Philippe White Gold Perpetual Calendar Ref. 5041

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Patek Philippe - Patek Philippe White Gold Perpetual Hand-Engraved Watch Ref. 5160 - The Keystone Watches

Patek Philippe White Gold Perpetual Hand-Engraved Watch Ref. 5160

Patek Philippe White Gold Perpetual Hand-Engraved Watch Ref. 5160

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

Patek Philippe Rose Gold Perpetual Calendar Minute Repeater Watch Ref. 5013

Patek Philippe Rose Gold Perpetual Calendar Minute Repeater Watch Ref. 5013

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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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Patek Philippe - Patek Philippe White Gold Perpetual Calendar Watch Ref. 3940 - The Keystone Watches

Patek Philippe White Gold Perpetual Calendar Watch Ref. 3940

Patek Philippe White Gold Perpetual Calendar Watch Ref. 3940

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Patek Philippe - Patek Philippe White Gold World Time Watch Ref. 5130 - The Keystone Watches

Patek Philippe White Gold World Time Watch Ref. 5130

Patek Philippe White Gold World Time Watch Ref. 5130

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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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A. Lange & Sohne - A. Lange & Sohne White Gold Pour Le Merite Watch Ref. 260.028 - The Keystone Watches

A. Lange & Sohne White Gold Pour Le Merite Watch Ref. 260.028

A. Lange & Sohne White Gold Pour Le Merite Watch Ref. 260.028

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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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Audemars Piguet - Audemars Piguet Royal Oak Chronograph Watch Ref. 26331 - The Keystone Watches

Audemars Piguet Royal Oak Chronograph Watch Ref. 26331

Audemars Piguet Royal Oak Chronograph Watch Ref. 26331

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Audemars Piguet - Audemars Piguet Royal Oak Offshore Chronograph Watch Ref. 26480 - The Keystone Watches

Audemars Piguet Royal Oak Offshore Chronograph Watch Ref. 26480

Audemars Piguet Royal Oak Offshore Chronograph Watch Ref. 26480

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Patek Philippe - Patek Philippe Rose Gold Perpetual Minute Repeater Watch Ref. 5074, Complete and Unworn - The Keystone Watches

Patek Philippe Rose Gold Perpetual Minute Repeater Watch Ref. 5074, Complete and Unworn

Patek Philippe Rose Gold Perpetual Minute Repeater Watch Ref. 5074, Complete and Unworn

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Patek Philippe - Patek Philippe White Gold Skeletonized Ultra-Thin Watch Ref. 5180/1G - The Keystone Watches

Patek Philippe White Gold Skeletonized Ultra-Thin Watch Ref. 5180/1G

Patek Philippe White Gold Skeletonized Ultra-Thin Watch Ref. 5180/1G

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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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Cartier - Cartier Yellow Gold Carree Obus Skeleton Watch, Limited to 100 - The Keystone Watches

Cartier Yellow Gold Carree Obus Skeleton Watch, Limited to 100

Cartier Yellow Gold Carree Obus Skeleton Watch, Limited to 100

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Patek Philippe - Patek Philippe White Gold Nautilus Diamond Watch Ref. 5719 - The Keystone Watches

Patek Philippe White Gold Nautilus Diamond Watch Ref. 5719

Patek Philippe White Gold Nautilus Diamond Watch Ref. 5719

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Patek Philippe - Patek Philippe White Gold World Time Ref. 5130, with Original Box and Papers - The Keystone Watches

Patek Philippe White Gold World Time Ref. 5130, with Original Box and Papers

Patek Philippe White Gold World Time Ref. 5130, with Original Box and Papers

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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 Rose Gold Chronograph Watch Ref. 5070, Completely Unworn - The Keystone Watches

Patek Philippe Rose Gold Chronograph Watch Ref. 5070, Completely Unworn

Patek Philippe Rose Gold Chronograph Watch Ref. 5070, Completely Unworn

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

Patek Philippe White Gold World Time Cloisonne Watch Ref. 5131

Patek Philippe White Gold World Time Cloisonne Watch Ref. 5131

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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 Yellow Gold World Time Watch Ref. 5110 - The Keystone Watches

Patek Philippe Yellow Gold World Time Watch Ref. 5110

Patek Philippe Yellow Gold World Time Watch Ref. 5110

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Patek Philippe - Patek Philippe Rose Gold 10-Day Tourbillon Watch, Ref. 5101 - The Keystone Watches

Patek Philippe Rose Gold 10-Day Tourbillon Watch, Ref. 5101

Patek Philippe Rose Gold 10-Day Tourbillon Watch, Ref. 5101

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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 White Gold Perpetual Calendar Chronograph Watch, Ref. 5270 - The Keystone Watches

Patek Philippe White Gold Perpetual Calendar Chronograph Watch, Ref. 5270

Patek Philippe White Gold Perpetual Calendar Chronograph Watch, Ref. 5270

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Perpetual Retrograde Grey Dial Watch Ref. 5050 - The Keystone Watches

Patek Philippe Yellow Gold Perpetual Retrograde Grey Dial Watch Ref. 5050

Patek Philippe Yellow Gold Perpetual Retrograde Grey Dial Watch Ref. 5050

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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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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
 
Cartier Yellow Gold Tank Obus Ref. 1630 with Black Enamel (New Arrival)

Cartier Yellow Gold Tank Obus Ref. 1630 with Black Enamel (New Arrival)

Cartier Yellow Gold Tank Obus Ref. 1630 with Black Enamel (New Arrival)

$14,500 USD
 
Patek Philippe Steel Automatic UFO Ref. 3580 (New Arrival)

Patek Philippe Steel Automatic UFO Ref. 3580 (New Arrival)

Patek Philippe Steel Automatic UFO Ref. 3580 (New Arrival)

$13,250 USD
 
Patek Philiipe Rose Gold Calatrava Watch Ref. 3796 (New Arrival)

Patek Philiipe Rose Gold Calatrava Watch Ref. 3796 (New Arrival)

Patek Philiipe Rose Gold Calatrava Watch Ref. 3796 (New Arrival)

$16,500 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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