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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Minute Repeater Ref. 5074, Single Sealed - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Minute Repeater Ref. 5074, Single Sealed

Patek Philippe Platinum Perpetual Calendar Minute Repeater Ref. 5074, Single Sealed

"Price upon request"
 

Patek Philippe Platinum World Time Watch Ref. 5131, Single Sealed

Patek Philippe Platinum World Time Watch Ref. 5131, Single Sealed

Sold Out

 
Patek Philippe - Patek Philippe Rose Gold Perpetual Minute Repeater Watch Ref. 5074, Double Sealed - The Keystone Watches

Patek Philippe Rose Gold Perpetual Minute Repeater Watch Ref. 5074, Double Sealed

Patek Philippe Rose Gold Perpetual Minute Repeater Watch Ref. 5074, Double Sealed

Sold Out

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

Patek Philippe Platinum Chronograph Watch Ref. 5070, Single Sealed

Patek Philippe Platinum Chronograph Watch Ref. 5070, Single Sealed

Sold Out

 

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

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

Sold Out

 
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 White Gold Chronograph Ref. 5070G, Unworn & Single Sealed - The Keystone Watches

Patek Philippe White Gold Chronograph Ref. 5070G, Unworn & Single Sealed

Patek Philippe White Gold Chronograph Ref. 5070G, Unworn & Single Sealed

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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 Rose Gold Grand Complication Watch Ref. 5207, Unworn & Double Sealed - The Keystone Watches

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

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

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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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Patek Philippe - Patek Philippe White Gold Annual Calendar Tiffany & Co. Watch Ref. 5396, Singled Sealed - The Keystone Watches

Patek Philippe White Gold Annual Calendar Tiffany & Co. Watch Ref. 5396, Singled Sealed

Patek Philippe White Gold Annual Calendar Tiffany & Co. Watch Ref. 5396, Singled Sealed

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Patek Philippe - Patek Philippe Platinum Monopusher Split Seconds Chrono Ref. 5959, Double Sealed and Unworn - The Keystone Watches

Patek Philippe Platinum Monopusher Split Seconds Chrono Ref. 5959, Double Sealed and Unworn

Patek Philippe Platinum Monopusher Split Seconds Chrono Ref. 5959, Double Sealed and Unworn

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Patek Philippe - Patek Philippe Platinum Perpetual Split Seconds Chrono Watch Ref. 5204 in Double Sealed and Unworn Condition - The Keystone Watches

Patek Philippe Platinum Perpetual Split Seconds Chrono Watch Ref. 5204 in Double Sealed and Unworn Condition

Patek Philippe Platinum Perpetual Split Seconds Chrono Watch Ref. 5204 in Double Sealed and Unworn Condition

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Patek Philippe - Patek Philippe Nautilus Moonphase Watch Ref. 5726 in Double Sealed and Unworn Condition - The Keystone Watches

Patek Philippe Nautilus Moonphase Watch Ref. 5726 in Double Sealed and Unworn Condition

Patek Philippe Nautilus Moonphase Watch Ref. 5726 in Double Sealed and Unworn Condition

Sold Out

 
Patek Philippe - Patek Philippe Platinum Chronograph 175th Anniversary Watch Ref. 5975 in Double Sealed Condition - The Keystone Watches

Patek Philippe Platinum Chronograph 175th Anniversary Watch Ref. 5975 in Double Sealed Condition

Patek Philippe Platinum Chronograph 175th Anniversary Watch Ref. 5975 in Double Sealed Condition

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New Arrivals Preview
 
Patek Philippe White Gold Rectangular Art Deco Watch (New Arrival)

Patek Philippe White Gold Rectangular Art Deco Watch (New Arrival)

Patek Philippe White Gold Rectangular Art Deco Watch (New Arrival)

$55,000 USD
 
Cartier Platinum Tank Watch Ref. 16111 (New Arrival)

Cartier Platinum Tank Watch Ref. 16111 (New Arrival)

Cartier Platinum Tank Watch Ref. 16111 (New Arrival)

$21,000 USD
 
Patek Philippe Yellow Gold Chronograph Watch Ref. 591, Incredible Original Condition (New Arrival)

Patek Philippe Yellow Gold Chronograph Watch Ref. 591, Incredible Original Condition (New Arrival)

Patek Philippe Yellow Gold Chronograph Watch Ref. 591, Incredible Original Condition (New Arrival)

$175,000 USD
 
Patek Philippe Yellow Gold Enamel Dial Calatrava Watch Ref. 2526 (New Arrival)

Patek Philippe Yellow Gold Enamel Dial Calatrava Watch Ref. 2526 (New Arrival)

Patek Philippe Yellow Gold Enamel Dial Calatrava Watch Ref. 2526 (New Arrival)

$70,000 USD
 
Breguet Platinum Skeleton Tourbillon Watch Ref. 3355 (New Arrival)

Breguet Platinum Skeleton Tourbillon Watch Ref. 3355 (New Arrival)

Breguet Platinum Skeleton Tourbillon Watch Ref. 3355 (New Arrival)

$67,500 USD
 
Piaget Yellow Gold Lapis Lazuli & Jade Cuff Watch (New Arrivals)

Piaget Yellow Gold Lapis Lazuli & Jade Cuff Watch (New Arrivals)

Piaget Yellow Gold Lapis Lazuli & Jade Cuff Watch (New Arrivals)

$48,000 USD
 
A. Lange & Sohne White Gold Saxomat Ref. 301.027 with Wellendorff Bracelet (New Arrival)

A. Lange & Sohne White Gold Saxomat Ref. 301.027 with Wellendorff Bracelet (New Arrival)

A. Lange & Sohne White Gold Saxomat Ref. 301.027 with Wellendorff Bracelet (New Arrival)

$48,500 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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