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

Patek Philippe Platinum Chronograph Watch Ref. 5070, Double Sealed

Patek Philippe Platinum Chronograph Watch Ref. 5070, Double Sealed

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

Patek Philippe Platinum Perpetual Split Seconds Chronograph Watch Ref. 5204

Patek Philippe Platinum Perpetual Split Seconds Chronograph Watch Ref. 5204

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Patek Philippe - Patek Philippe Platinum Handcrafts Cloisonne Peacock Watch, Ref. 5077 Unworn and Double Sealed - The Keystone Watches

Patek Philippe Platinum Handcrafts Cloisonne Peacock Watch, Ref. 5077 Unworn and Double Sealed

Patek Philippe Platinum Handcrafts Cloisonne Peacock Watch, Ref. 5077 Unworn and Double Sealed

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Chronograph Diamond Watch Ref. 5271 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Chronograph Diamond Watch Ref. 5271

Patek Philippe Platinum Perpetual Calendar Chronograph Diamond Watch Ref. 5271

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Patek Philippe - Patek Philippe Platinum Calatrava Watch Ref. 5298 with Baguette Diamonds - The Keystone Watches

Patek Philippe Platinum Calatrava Watch Ref. 5298 with Baguette Diamonds

Patek Philippe Platinum Calatrava Watch Ref. 5298 with Baguette Diamonds

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

Patek Philippe Platinum Perpetual Calendar Chrono Watch Ref. 5270

Patek Philippe Platinum Perpetual Calendar Chrono Watch Ref. 5270

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Patek Philippe - Patek Philippe Platinum Calatrava Sapphire Dial Watch Ref. 3796 - The Keystone Watches

Patek Philippe Platinum Calatrava Sapphire Dial Watch Ref. 3796

Patek Philippe Platinum Calatrava Sapphire Dial Watch Ref. 3796

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Diamond Watch Ref. 5971 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Diamond Watch Ref. 5971

Patek Philippe Platinum Perpetual Calendar Diamond Watch Ref. 5971

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Patek Philippe - Patek Philippe Platinum Split Seconds Monopusher Ref. 5370 - The Keystone Watches

Patek Philippe Platinum Split Seconds Monopusher Ref. 5370

Patek Philippe Platinum Split Seconds Monopusher Ref. 5370

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Patek Philippe - Patek Philippe Platinum Annual Calendar Chronograph Ref. 5960 - The Keystone Watches

Patek Philippe Platinum Annual Calendar Chronograph Ref. 5960

Patek Philippe Platinum Annual Calendar Chronograph Ref. 5960

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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 World Time Watch Ref. 5130 - The Keystone Watches

Patek Philippe Platinum World Time Watch Ref. 5130

Patek Philippe Platinum World Time Watch Ref. 5130

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Patek Philippe - Patek Philippe Platinum and Emerald Perpetual Calendar Chronograph Watch Ref. 5271 - The Keystone Watches

Patek Philippe Platinum and Emerald Perpetual Calendar Chronograph Watch Ref. 5271

Patek Philippe Platinum and Emerald Perpetual Calendar Chronograph Watch Ref. 5271

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Watch Ref. 5040 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5040

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5040

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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 Platinum Minute Repeater Ref. 3979 - The Keystone Watches

Patek Philippe Platinum Minute Repeater Ref. 3979

Patek Philippe Platinum Minute Repeater Ref. 3979

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

Patek Philippe Platinum Perpetual Calendar Chronograph, Ref. 5270P

Patek Philippe Platinum Perpetual Calendar Chronograph, Ref. 5270P

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Patek Philippe - Patek Philippe Platinum Perpetual Ref. 3940 with Box and Papers - The Keystone Watches

Patek Philippe Platinum Perpetual Ref. 3940 with Box and Papers

Patek Philippe Platinum Perpetual Ref. 3940 with Box and Papers

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

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5970

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5970

Sold Out

 
Patek Philippe - Patek Philippe Platinum Perpetual Calendar Split Seconds Chrono Ref. 5004 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Split Seconds Chrono Ref. 5004

Patek Philippe Platinum Perpetual Calendar Split Seconds Chrono Ref. 5004

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

Patek Philippe Platinum World Time Watch Ref. 5131

Patek Philippe Platinum World Time Watch Ref. 5131

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Split Seconds Chrono Ref. 5004 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Split Seconds Chrono Ref. 5004

Patek Philippe Platinum Perpetual Calendar Split Seconds Chrono Ref. 5004

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Patek Philippe - Patek Philippe Platinum Minute Repeater Tourbillon Watch Ref. 3939 - The Keystone Watches

Patek Philippe Platinum Minute Repeater Tourbillon Watch Ref. 3939

Patek Philippe Platinum Minute Repeater Tourbillon Watch Ref. 3939

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 3970 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 3970

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 3970

Sold Out

 
Patek Philippe - Patek Philippe Platinum Calatrava Watch Ref. 5107 - The Keystone Watches

Patek Philippe Platinum Calatrava Watch Ref. 5107

Patek Philippe Platinum Calatrava Watch Ref. 5107

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Patek Philippe - Patek Philippe Platinum Nautilus Watch Ref. 3800 with Original Warranty - The Keystone Watches

Patek Philippe Platinum Nautilus Watch Ref. 3800 with Original Warranty

Patek Philippe Platinum Nautilus Watch Ref. 3800 with Original Warranty

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Ref. 3940P with Original Warranty Paper - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Ref. 3940P with Original Warranty Paper

Patek Philippe Platinum Perpetual Calendar Ref. 3940P with Original Warranty Paper

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Patek Philippe - Patek Philippe Platinum Annual Calendar Chronograph Ref. 5961P - The Keystone Watches

Patek Philippe Platinum Annual Calendar Chronograph Ref. 5961P

Patek Philippe Platinum Annual Calendar Chronograph Ref. 5961P

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Patek Philippe - Patek Philippe Platinum World Time Watch Ref. 5110 - The Keystone Watches

Patek Philippe Platinum World Time Watch Ref. 5110

Patek Philippe Platinum World Time Watch Ref. 5110

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Patek Philippe - Patek Philippe Rectangular Platinum & Baguette Diamond Watch Ref. 5007 - The Keystone Watches

Patek Philippe Rectangular Platinum & Baguette Diamond Watch Ref. 5007

Patek Philippe Rectangular Platinum & Baguette Diamond Watch Ref. 5007

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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

Sold Out

 
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. 5074, One of Only Two Known - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5074, One of Only Two Known

Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5074, One of Only Two Known

Sold Out

 
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

Sold Out

 
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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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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