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Patek Philippe Yellow Gold Calatrava Ref. 3403

Patek Philippe Yellow Gold Calatrava Ref. 3403

Sold Out

 

Cartier Platinum Vendome Ronde Louis Ref. 1297

Cartier Platinum Vendome Ronde Louis Ref. 1297

Sold Out

 
Jaeger Lecoultre White Gold Bamboo Watch

Jaeger Lecoultre White Gold Bamboo Watch

Jaeger Lecoultre White Gold Bamboo Watch

Sold Out

 
Piaget - Piaget Yellow Gold and Onyx Watch Ref. 9341 - The Keystone Watches

Piaget Yellow Gold and Onyx Watch Ref. 9341

Piaget Yellow Gold and Onyx Watch Ref. 9341

Sold Out

 
Vacheron Constantin - Vacheron Constantin Yellow Gold Watch with Baguette Diamonds - The Keystone Watches

Vacheron Constantin Yellow Gold Watch with Baguette Diamonds

Vacheron Constantin Yellow Gold Watch with Baguette Diamonds

Sold Out

 
Piaget Yellow Gold, Diamond and Emerald Watch Ref. 15301

Piaget Yellow Gold, Diamond and Emerald Watch Ref. 15301

Piaget Yellow Gold, Diamond and Emerald Watch Ref. 15301

$40,000 USD
 
Daniel Roth - Daniel Roth 8-Day Double Face Tourbillon Diamond & Sapphire Watch Ref. 197.x.60 - The Keystone Watches

Daniel Roth 8-Day Double Face Tourbillon Diamond & Sapphire Watch Ref. 197.x.60

Daniel Roth 8-Day Double Face Tourbillon Diamond & Sapphire Watch Ref. 197.x.60

Sold Out

 
Cartier - Cartier Yellow Gold Tank Travel Clock, Sold in London - The Keystone Watches

Cartier Yellow Gold Tank Travel Clock, Sold in London

Cartier Yellow Gold Tank Travel Clock, Sold in London

Sold Out

 
Patek Philippe Yellow Gold Pocket Watch Ref. 652 with Breguet Numerals Retailed by Tiffany & Co. Ref. 652/1

Patek Philippe Yellow Gold Pocket Watch Ref. 652 with Breguet Numerals Retailed by Tiffany & Co. Ref. 652/1

Patek Philippe Yellow Gold Pocket Watch Ref. 652 with Breguet Numerals Retailed by Tiffany & Co. Ref. 652/1

Sold Out

 

Patek Philippe Steel Weekly Calendar Ref. 5212

Patek Philippe Steel Weekly Calendar Ref. 5212

Sold Out

 
Cartier - Cartier Steel Black Lacquer Santos Dumont Ref. WSSA0046 - The Keystone Watches

Cartier Steel Black Lacquer Santos Dumont Ref. WSSA0046

Cartier Steel Black Lacquer Santos Dumont Ref. WSSA0046

Sold Out

 

Patek Philippe Unique Platinum Monopusher Split Seconds Chronograph Ref. 5959

Patek Philippe Unique Platinum Monopusher Split Seconds Chronograph Ref. 5959

"Price upon request"
 

Patek Philippe Platinum 10 Day Tourbillon Ref. 5101P

Patek Philippe Platinum 10 Day Tourbillon Ref. 5101P

Sold Out

 
Patek Philippe Yellow Gold Chronograph Pocket Watch

Patek Philippe Yellow Gold Chronograph Pocket Watch

Patek Philippe Yellow Gold Chronograph Pocket Watch

Sold Out

 

Audemars Piguet Steel Royal Oak A-Series Watch Ref. 5402

Audemars Piguet Steel Royal Oak A-Series Watch Ref. 5402

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Perpetual Calendar Ref. 3940 - The Keystone Watches

Patek Philippe Yellow Gold Perpetual Calendar Ref. 3940

Patek Philippe Yellow Gold Perpetual Calendar Ref. 3940

Sold Out

 

Cartier Platinum Ronde Louis Ref. W1528051 CPCP Collection

Cartier Platinum Ronde Louis Ref. W1528051 CPCP Collection

Sold Out

 
Patek Philippe Steel Calatrava Ref. 3483

Patek Philippe Steel Calatrava Ref. 3483

Patek Philippe Steel Calatrava Ref. 3483

$27,500 USD
 
Piaget - Piaget White Gold Emperador Diamond Ref. 9131 - The Keystone Watches

Piaget White Gold Emperador Diamond Ref. 9131

Piaget White Gold Emperador Diamond Ref. 9131

Sold Out

 
Corum Yellow Gold Rolls Royce Mechanical Watch Ref. 55595

Corum Yellow Gold Rolls Royce Mechanical Watch Ref. 55595

Corum Yellow Gold Rolls Royce Mechanical Watch Ref. 55595

$8,500 USD
 

Cartier White Gold Cintree Dual Time Watch Ref. 2767 with Chinese Characters

Cartier White Gold Cintree Dual Time Watch Ref. 2767 with Chinese Characters

Sold Out

 
Cartier Yellow Gold Pocket Watch, European Watch & Clock Movement

Cartier Yellow Gold Pocket Watch, European Watch & Clock Movement

Cartier Yellow Gold Pocket Watch, European Watch & Clock Movement

$6,500 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.

Stay in touch.

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