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A. Lange & Sohne - A Lange & Sohne 1815 Chronograph White Gold - The Keystone Watches

A Lange & Sohne 1815 Chronograph White Gold

A Lange & Sohne 1815 Chronograph White Gold

Sold Out

 
A. Lange & Sohne - A Lange & Sohne Lange 1 Yellow Gold - The Keystone Watches

A Lange & Sohne Lange 1 Yellow Gold

A Lange & Sohne Lange 1 Yellow Gold

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A. Lange & Sohne - A Lange & Sohne Rose Gold Richard Lange Referenzuhr Ref. 250.032 - The Keystone Watches

A Lange & Sohne Rose Gold Richard Lange Referenzuhr Ref. 250.032

A Lange & Sohne Rose Gold Richard Lange Referenzuhr Ref. 250.032

Sold Out

 
A. Lange & Sohne - A Lange & Sohne Rose Gold Saxonia Dual Time Watch Ref. 385.032 - The Keystone Watches

A Lange & Sohne Rose Gold Saxonia Dual Time Watch Ref. 385.032

A Lange & Sohne Rose Gold Saxonia Dual Time Watch Ref. 385.032

Sold Out

 
A. Lange & Sohne - A Lange & Sohne White Gold 1815 Chronograph Watch - The Keystone Watches

A Lange & Sohne White Gold 1815 Chronograph Watch

A Lange & Sohne White Gold 1815 Chronograph Watch

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A. Lange & Sohne - A Lange & Sohne White Gold Saxonia Annual Calendar Watch, Ref. 330.026 - The Keystone Watches

A Lange & Sohne White Gold Saxonia Annual Calendar Watch, Ref. 330.026

A Lange & Sohne White Gold Saxonia Annual Calendar Watch, Ref. 330.026

Sold Out

 

A Lange and Sohne Little Lange 1 Ref. 181.038

A Lange and Sohne Little Lange 1 Ref. 181.038

Sold Out

 
A. Lange & Sohne - A Lange and Sohne Platinum Lange 1 Ref. 101.025 - The Keystone Watches

A Lange and Sohne Platinum Lange 1 Ref. 101.025

A Lange and Sohne Platinum Lange 1 Ref. 101.025

Sold Out

 

A Lange and Sohne White Gold Saxonia Ref. 308.027

A Lange and Sohne White Gold Saxonia Ref. 308.027

Sold Out

 
A. Lange & Sohne 330.026E White Gold Annual Calendar (New Arrival)

A. Lange & Sohne 330.026E White Gold Annual Calendar (New Arrival)

A. Lange & Sohne 330.026E White Gold Annual Calendar (New Arrival)

Sold Out

 
A. Lange & Sohne - A. Lange & Sohne Lange 1 Moonphase Ref. 182.086 - The Keystone Watches

A. Lange & Sohne Lange 1 Moonphase Ref. 182.086

A. Lange & Sohne Lange 1 Moonphase Ref. 182.086

Sold Out

 
A. Lange & Sohne - A. Lange & Sohne Lange 1 Yellow Gold Watch Ref. 115.021 - The Keystone Watches

A. Lange & Sohne Lange 1 Yellow Gold Watch Ref. 115.021

A. Lange & Sohne Lange 1 Yellow Gold Watch Ref. 115.021

Sold Out

 
A. Lange & Sohne - A. Lange & Sohne Platinum 1815 Tourbillon Watch Ref. 730.025 - The Keystone Watches

A. Lange & Sohne Platinum 1815 Tourbillon Watch Ref. 730.025

A. Lange & Sohne Platinum 1815 Tourbillon Watch Ref. 730.025

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A. Lange & Sohne Platinum 1815 Tourbillon Watch Ref. 730.025

A. Lange & Sohne Platinum 1815 Tourbillon Watch Ref. 730.025

A. Lange & Sohne Platinum 1815 Tourbillon Watch Ref. 730.025

$118,000 USD
 
A. Lange & Sohne - A. Lange & Sohne Platinum Cabaret Tourbillon Watch - The Keystone Watches

A. Lange & Sohne Platinum Cabaret Tourbillon Watch

A. Lange & Sohne Platinum Cabaret Tourbillon Watch

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A. Lange & Sohne - A. Lange & Sohne Platinum Darth Lange 1 Ref. 101.035 - The Keystone Watches

A. Lange & Sohne Platinum Darth Lange 1 Ref. 101.035

A. Lange & Sohne Platinum Darth Lange 1 Ref. 101.035

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A. Lange & Sohne - A. Lange & Sohne Platinum Darth Saxonia 105.035 - The Keystone Watches

A. Lange & Sohne Platinum Darth Saxonia 105.035

A. Lange & Sohne Platinum Darth Saxonia 105.035

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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 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

Sold Out

 
A. Lange & Sohne - A. Lange & Sohne Platinum Datograph Up Down Watch Ref. 405.035 - The Keystone Watches

A. Lange & Sohne Platinum Datograph Up Down Watch Ref. 405.035

A. Lange & Sohne Platinum Datograph Up Down Watch Ref. 405.035

Sold Out

 
A. Lange & Sohne - A. Lange & Sohne Platinum Datograph Up/Down Watch Ref. 405.035 - The Keystone Watches

A. Lange & Sohne Platinum Datograph Up/Down Watch Ref. 405.035

A. Lange & Sohne Platinum Datograph Up/Down Watch Ref. 405.035

Sold Out

 
A. Lange & Sohne - A. Lange & Sohne Platinum Datograph Watch Ref. 403.035 - The Keystone Watches

A. Lange & Sohne Platinum Datograph Watch Ref. 403.035

A. Lange & Sohne Platinum Datograph Watch Ref. 403.035

Sold Out

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New Arrivals Preview
 
Rolex White Gold Day-Date Ref. 18039 with Attractive Tropical Dial (New Arrival)

Rolex White Gold Day-Date Ref. 18039 with Attractive Tropical Dial (New Arrival)

Rolex White Gold Day-Date Ref. 18039 with Attractive Tropical Dial (New Arrival)

$19,800 USD
 
Patek Philippe Calatrava Ref. 3579 with Box and Service Papers (New Arrival)

Patek Philippe Calatrava Ref. 3579 with Box and Service Papers (New Arrival)

Patek Philippe Calatrava Ref. 3579 with Box and Service Papers (New Arrival)

$15,000 USD
 
Patek Philippe Steel Calatrava Ref. 3509 with Archive Paper (New Arrival)

Patek Philippe Steel Calatrava Ref. 3509 with Archive Paper (New Arrival)

Patek Philippe Steel Calatrava Ref. 3509 with Archive Paper (New Arrival)

$12,500 USD
 
Audemars Piguet Platinum Jump Hour Minute Repeater Ref. 26151 (New Arrival)

Audemars Piguet Platinum Jump Hour Minute Repeater Ref. 26151 (New Arrival)

Audemars Piguet Platinum Jump Hour Minute Repeater Ref. 26151 (New Arrival)

$135,000 USD
 
Audemars Piguet White Gold Jules Audemars Ref. 15093BC (New Arrival)

Audemars Piguet White Gold Jules Audemars Ref. 15093BC (New Arrival)

Audemars Piguet White Gold Jules Audemars Ref. 15093BC (New Arrival)

$10,500 USD
 
Patek Philippe World Time Flyback Chronograph Ref. 5935A-001 with Box and Papers (New Arrival)

Patek Philippe World Time Flyback Chronograph Ref. 5935A-001 with Box and Papers (New Arrival)

Patek Philippe World Time Flyback Chronograph Ref. 5935A-001 with Box and Papers (New Arrival)

$55,000 USD
 
Patek Philippe White Gold Perpetual Calendar Chronograph Ref. 5204 (New Arrival)

Patek Philippe White Gold Perpetual Calendar Chronograph Ref. 5204 (New Arrival)

Patek Philippe White Gold Perpetual Calendar Chronograph Ref. 5204 (New Arrival)

$210,000 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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