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Patek Philippe - Vintage Patek Philippe Platinum Rectangular Diamond Watch Ref. 425 - The Keystone Watches

Vintage Patek Philippe Platinum Rectangular Diamond Watch Ref. 425

Vintage Patek Philippe Platinum Rectangular Diamond Watch Ref. 425

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Patek Philippe - Patek Philippe Yellow Gold Onyx Dial Strap Watch Ref. 3729 - The Keystone Watches

Patek Philippe Yellow Gold Onyx Dial Strap Watch Ref. 3729

Patek Philippe Yellow Gold Onyx Dial Strap Watch Ref. 3729

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Patek Philippe - Patek Philippe Rose Gold Annual Calendar Advanced Research Ref. 5350R - The Keystone Watches

Patek Philippe Rose Gold Annual Calendar Advanced Research Ref. 5350R

Patek Philippe Rose Gold Annual Calendar Advanced Research Ref. 5350R

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A. Lange & Sohne - A. Lange & Sohne Yellow Gold Lange 1 Bracelet Watch Ref. 101.021 - The Keystone Watches

A. Lange & Sohne Yellow Gold Lange 1 Bracelet Watch Ref. 101.021

A. Lange & Sohne Yellow Gold Lange 1 Bracelet Watch Ref. 101.021

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Patek Philippe - Patek Philippe White Gold Gondolo Salmon Dial Ref. 5024 - The Keystone Watches

Patek Philippe White Gold Gondolo Salmon Dial Ref. 5024

Patek Philippe White Gold Gondolo Salmon Dial Ref. 5024

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Audemars Piguet - Audemars Piguet Platinum Quantieme Perpetual Automatique Watch - The Keystone Watches

Audemars Piguet Platinum Quantieme Perpetual Automatique Watch

Audemars Piguet Platinum Quantieme Perpetual Automatique Watch

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Audemars Piguet - Audemars Piguet Yellow Gold Automatic Strap Watch - The Keystone Watches

Audemars Piguet Yellow Gold Automatic Strap Watch

Audemars Piguet Yellow Gold Automatic Strap Watch

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Patek Philippe - Patek Philippe Yellow Gold Automatic Bracelet Watch Ref. 3604 - The Keystone Watches

Patek Philippe Yellow Gold Automatic Bracelet Watch Ref. 3604

Patek Philippe Yellow Gold Automatic Bracelet Watch Ref. 3604

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New Arrivals Preview
 
Audemars Piguet Royal Oak Dual Time Watch Ref. 25730 with Bright Yellow Dial (New Arrival)

Audemars Piguet Royal Oak Dual Time Watch Ref. 25730 with Bright Yellow Dial (New Arrival)

Audemars Piguet Royal Oak Dual Time Watch Ref. 25730 with Bright Yellow Dial (New Arrival)

$105,000 USD
 
Breguet Cushion Shaped Diver 200m Watch (New Arrival)

Breguet Cushion Shaped Diver 200m Watch (New Arrival)

Breguet Cushion Shaped Diver 200m Watch (New Arrival)

$58,000 USD
 
Audemars Piguet White Gold Rectangular Watch with Lapis Watch (New Arrival)

Audemars Piguet White Gold Rectangular Watch with Lapis Watch (New Arrival)

Audemars Piguet White Gold Rectangular Watch with Lapis Watch (New Arrival)

$18,000 USD
 
Cartier Yellow Gold Tank Normale Bracelet Watch  Ref. 78092 (New Arrival)

Cartier Yellow Gold Tank Normale Bracelet Watch Ref. 78092 (New Arrival)

Cartier Yellow Gold Tank Normale Bracelet Watch Ref. 78092 (New Arrival)

$36,000 USD
 
Cartier - Cartier Yellow Gold Tank Reverso (New Arrival) - The Keystone Watches

Cartier Yellow Gold Tank Reverso (New Arrival)

Cartier Yellow Gold Tank Reverso (New Arrival)

$34,500 USD
 
A. Lange & Sohne - A. Lange & Sohne Pink Gold 1815 Tourbillon Watch Ref. 730.032 (New Arrival) - The Keystone Watches

A. Lange & Sohne Pink Gold 1815 Tourbillon Watch Ref. 730.032 (New Arrival)

A. Lange & Sohne Pink Gold 1815 Tourbillon Watch Ref. 730.032 (New Arrival)

$99,000 USD
 
Audemars Piguet White Gold Cobra-style Bracelet Watch (New Arrival)

Audemars Piguet White Gold Cobra-style Bracelet Watch (New Arrival)

Audemars Piguet White Gold Cobra-style Bracelet Watch (New Arrival)

$17,000 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.

Stay in touch.

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