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Patek Philippe - Patek Philippe White Gold Perpetual Calendar Automatic Watch Ref. 5140 - The Keystone Watches

Patek Philippe White Gold Perpetual Calendar Automatic Watch Ref. 5140

Patek Philippe White Gold Perpetual Calendar Automatic Watch Ref. 5140

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Advanced Research Watch Ref. 5550 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Advanced Research Watch Ref. 5550

Patek Philippe Platinum Perpetual Calendar Advanced Research Watch Ref. 5550

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Patek Philippe - Patek Philippe Platinum Advanced Research Annual Calendar Watch Ref. 5450 - The Keystone Watches

Patek Philippe Platinum Advanced Research Annual Calendar Watch Ref. 5450

Patek Philippe Platinum Advanced Research Annual Calendar Watch Ref. 5450

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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 Aquanaut Automatic Watch Ref. 5066 - The Keystone Watches

Patek Philippe Aquanaut Automatic Watch Ref. 5066

Patek Philippe Aquanaut Automatic Watch Ref. 5066

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Patek Philippe - Patek Philippe Aquanaut Watch Ref. 5065 with Original Box, Papers, & Rubber Strap - The Keystone Watches

Patek Philippe Aquanaut Watch Ref. 5065 with Original Box, Papers, & Rubber Strap

Patek Philippe Aquanaut Watch Ref. 5065 with Original Box, Papers, & Rubber Strap

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Audemars Piguet - Audemars Piguet Rose Gold Royal Oak Tourbillon Watch Ref. 26522 - The Keystone Watches

Audemars Piguet Rose Gold Royal Oak Tourbillon Watch Ref. 26522

Audemars Piguet Rose Gold Royal Oak Tourbillon Watch Ref. 26522

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Audemars Piguet - Audemars Piguet Rose Gold Royal Oak Ultra-Thin Watch Ref. 15202 - The Keystone Watches

Audemars Piguet Rose Gold Royal Oak Ultra-Thin Watch Ref. 15202

Audemars Piguet Rose Gold Royal Oak Ultra-Thin Watch Ref. 15202

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Rolex - Rolex Yellow Gold Daytona Rainbow Watch Ref. 116598 - The Keystone Watches

Rolex Yellow Gold Daytona Rainbow Watch Ref. 116598

Rolex Yellow Gold Daytona Rainbow Watch Ref. 116598

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Rolex - Rolex Cosmograph Daytona Watch Ref. 116520, with Original Box and Papers, Completely New Old Stock - The Keystone Watches

Rolex Cosmograph Daytona Watch Ref. 116520, with Original Box and Papers, Completely New Old Stock

Rolex Cosmograph Daytona Watch Ref. 116520, with Original Box and Papers, Completely New Old Stock

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Audemars Piguet - Audemars Piguet White Gold Royal Oak Salmon Dial Watch Ref. 15202 - The Keystone Watches

Audemars Piguet White Gold Royal Oak Salmon Dial Watch Ref. 15202

Audemars Piguet White Gold Royal Oak Salmon Dial Watch Ref. 15202

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Patek Philippe - Patek Philippe Rose Gold Aquanaut Watch Ref. 5164 - The Keystone Watches

Patek Philippe Rose Gold Aquanaut Watch Ref. 5164

Patek Philippe Rose Gold Aquanaut Watch Ref. 5164

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Patek Philippe - Patek Philippe White Gold Nautilus Moonphase Watch Ref. 5712 - The Keystone Watches

Patek Philippe White Gold Nautilus Moonphase Watch Ref. 5712

Patek Philippe White Gold Nautilus Moonphase Watch Ref. 5712

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Patek Philippe - Patek Philippe Platinum Minute Repeating Tourbillon Watch Ref. 5016 - The Keystone Watches

Patek Philippe Platinum Minute Repeating Tourbillon Watch Ref. 5016

Patek Philippe Platinum Minute Repeating Tourbillon Watch Ref. 5016

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Rolex - Rolex Rose Gold Daytona Rainbow Watch Ref. 116595 in Unworn Condition - The Keystone Watches

Rolex Rose Gold Daytona Rainbow Watch Ref. 116595 in Unworn Condition

Rolex Rose Gold Daytona Rainbow Watch Ref. 116595 in Unworn Condition

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Patek Philippe - Patek Philippe Nautilus Moonphase Watch Ref. 5712 - The Keystone Watches

Patek Philippe Nautilus Moonphase Watch Ref. 5712

Patek Philippe Nautilus Moonphase Watch Ref. 5712

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

Patek Philippe Rose Gold Perpetual Calendar Chronograph Watch Ref. 5970

Patek Philippe Rose Gold Perpetual Calendar Chronograph Watch Ref. 5970

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Patek Philippe - Patek Philippe Rose Gold Nautilus Moonphase Watch Ref. 5712 - The Keystone Watches

Patek Philippe Rose Gold Nautilus Moonphase Watch Ref. 5712

Patek Philippe Rose Gold Nautilus Moonphase Watch Ref. 5712

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Patek Philippe - Patek Philippe Annual Calendar Chronograph Watch Ref. 5905 - The Keystone Watches

Patek Philippe Annual Calendar Chronograph Watch Ref. 5905

Patek Philippe Annual Calendar Chronograph Watch Ref. 5905

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Patek Philippe - Patek Philippe Steel Aquanaut Watch Ref. 5167 with Original Box and Papers - The Keystone Watches

Patek Philippe Steel Aquanaut Watch Ref. 5167 with Original Box and Papers

Patek Philippe Steel Aquanaut Watch Ref. 5167 with Original Box and Papers

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Audemars Piguet - Audemars Piguet White Gold Royal Oak Salmon Dial Watch Ref. 15202 - The Keystone Watches

Audemars Piguet White Gold Royal Oak Salmon Dial Watch Ref. 15202

Audemars Piguet White Gold Royal Oak Salmon Dial Watch Ref. 15202

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New Arrivals Preview
 
Breguet Platinum and Rose Gold Tourbillon Ref. 3457 (New Arrival)

Breguet Platinum and Rose Gold Tourbillon Ref. 3457 (New Arrival)

Breguet Platinum and Rose Gold Tourbillon Ref. 3457 (New Arrival)

$68,500 USD
 
Cartier Tank Coussin Bamboo Ref. 78102 (New Arrival)

Cartier Tank Coussin Bamboo Ref. 78102 (New Arrival)

Cartier Tank Coussin Bamboo Ref. 78102 (New Arrival)

$125,000 USD
 
Cartier Tank Allongee Elongated, Circa 1940 (New Arrival)

Cartier Tank Allongee Elongated, Circa 1940 (New Arrival)

Cartier Tank Allongee Elongated, Circa 1940 (New Arrival)

$62,000 USD
 
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
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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