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A. Lange & Sohne White Gold Lange 1 Ref. 101.039

A. Lange & Sohne White Gold Lange 1 Ref. 101.039

A. Lange & Sohne White Gold Lange 1 Ref. 101.039

$26,500 USD
 
Rolex White Gold Day-Date Ref. 19019

Rolex White Gold Day-Date Ref. 19019

Rolex White Gold Day-Date Ref. 19019

Sold Out

 
Patek Philippe Golden Ellipse Ref. 3604

Patek Philippe Golden Ellipse Ref. 3604

Patek Philippe Golden Ellipse Ref. 3604

$26,500 USD
 
Rolex Yellow Gold Day-Date Ref. 1803 with Original Warranty, Circa 1976

Rolex Yellow Gold Day-Date Ref. 1803 with Original Warranty, Circa 1976

Rolex Yellow Gold Day-Date Ref. 1803 with Original Warranty, Circa 1976

Sold Out

 
Rolex Steel Daytona Big Red Ref. 6263 in Incredible Original Condition

Rolex Steel Daytona Big Red Ref. 6263 in Incredible Original Condition

Rolex Steel Daytona Big Red Ref. 6263 in Incredible Original Condition

Sold Out

 
Cartier Platinum Tank Obus European Watch & Clock, 1926

Cartier Platinum Tank Obus European Watch & Clock, 1926

Cartier Platinum Tank Obus European Watch & Clock, 1926

$100,000 USD
 
Cartier Platinum Tank A Guichet Ref. WGTA0236, 2025 Edition (New Arrival)

Cartier Platinum Tank A Guichet Ref. WGTA0236, 2025 Edition (New Arrival)

Cartier Platinum Tank A Guichet Ref. WGTA0236, 2025 Edition (New Arrival)

Sold Out

 
Audemars Piguet Yellow Gold Royal Oak Ref. 56343 with Baguette Diamonds and Rubies

Audemars Piguet Yellow Gold Royal Oak Ref. 56343 with Baguette Diamonds and Rubies

Audemars Piguet Yellow Gold Royal Oak Ref. 56343 with Baguette Diamonds and Rubies

$86,000 USD
 
Cartier Yellow Gold Mini Tank, Circa 1970s

Cartier Yellow Gold Mini Tank, Circa 1970s

Cartier Yellow Gold Mini Tank, Circa 1970s

Sold Out

 
Rolex Steel Flat 4 Kermit Submariner Ref. 16610LV

Rolex Steel Flat 4 Kermit Submariner Ref. 16610LV

Rolex Steel Flat 4 Kermit Submariner Ref. 16610LV

$16,500 USD
 
Harry Winston White Gold Ref. 200-MAB137W

Harry Winston White Gold Ref. 200-MAB137W

Harry Winston White Gold Ref. 200-MAB137W

$9,000 USD
 

Patek Philippe Platinum Perpetual Calendar Ref. 5496

Patek Philippe Platinum Perpetual Calendar Ref. 5496

$48,500 USD
 
Audemars Piguet Yellow Gold Coin Watch (New Arrival)

Audemars Piguet Yellow Gold Coin Watch (New Arrival)

Audemars Piguet Yellow Gold Coin Watch (New Arrival)

Sold Out

 
Patek Philippe White Gold Gondolo Ref. 3553

Patek Philippe White Gold Gondolo Ref. 3553

Patek Philippe White Gold Gondolo Ref. 3553

Sold Out

 
Cartier Yellow Gold Tank with Paris Dial

Cartier Yellow Gold Tank with Paris Dial

Cartier Yellow Gold Tank with Paris Dial

Sold Out

 
Patek Philippe Rose Gold Perpetual Calendar Watch Ref. 5040

Patek Philippe Rose Gold Perpetual Calendar Watch Ref. 5040

Patek Philippe Rose Gold Perpetual Calendar Watch Ref. 5040

$44,000 USD
 
Rolex Steel Milgauss Ref. 1019

Rolex Steel Milgauss Ref. 1019

Rolex Steel Milgauss Ref. 1019

$23,500 USD
 
A. Lange & Sohne Platinum Langematik Perpetual Calendar Ref. 310.025

A. Lange & Sohne Platinum Langematik Perpetual Calendar Ref. 310.025

A. Lange & Sohne Platinum Langematik Perpetual Calendar Ref. 310.025

Sold Out

 
Cartier White Gold Tank Watch Ref. 78086

Cartier White Gold Tank Watch Ref. 78086

Cartier White Gold Tank Watch Ref. 78086

Sold Out

 
Piaget Rose Gold Altiplano Tourbillon Ref. P11485 with Malachite Marquetry Dial

Piaget Rose Gold Altiplano Tourbillon Ref. P11485 with Malachite Marquetry Dial

Piaget Rose Gold Altiplano Tourbillon Ref. P11485 with Malachite Marquetry Dial

$70,000 USD
 
Breguet Yellow Gold Classique Watch Ref. 5930

Breguet Yellow Gold Classique Watch Ref. 5930

Breguet Yellow Gold Classique Watch Ref. 5930

Sold Out

 
Patek Philippe Rose Gold Gondolo Gemma Ref. 4980

Patek Philippe Rose Gold Gondolo Gemma Ref. 4980

Patek Philippe Rose Gold Gondolo Gemma Ref. 4980

$10,800 USD
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New Arrivals Preview
 
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
 
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
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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