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Vacheron Constantin Ladies Skeleton Diamond Ref. 43502/1

Vacheron Constantin Ladies Skeleton Diamond Ref. 43502/1

Vacheron Constantin Ladies Skeleton Diamond Ref. 43502/1

$15,000 USD
 
Piaget White Gold Onyx and Diamond Watch Ref. 93419

Piaget White Gold Onyx and Diamond Watch Ref. 93419

Piaget White Gold Onyx and Diamond Watch Ref. 93419

Sold Out

 
Patek Philippe Yellow Gold and Lapis Lazuli Watch Ref. 4240

Patek Philippe Yellow Gold and Lapis Lazuli Watch Ref. 4240

Patek Philippe Yellow Gold and Lapis Lazuli Watch Ref. 4240

$300,000 USD
 
Omega Yellow Gold Sculptural Watch Ref. 8305, Designed by Andrew Grima for Jeux dOr Collection

Omega Yellow Gold Sculptural Watch Ref. 8305, Designed by Andrew Grima for Jeux dOr Collection

Omega Yellow Gold Sculptural Watch Ref. 8305, Designed by Andrew Grima for Jeux dOr Collection

$60,000 USD
 
IWC Yellow Gold Turquoise & Diamond Watch

IWC Yellow Gold Turquoise & Diamond Watch

IWC Yellow Gold Turquoise & Diamond Watch

Sold Out

 
Patek Philippe Onyx, Malachite & Diamond Watch Ref. 4282

Patek Philippe Onyx, Malachite & Diamond Watch Ref. 4282

Patek Philippe Onyx, Malachite & Diamond Watch Ref. 4282

$60,000 USD
 
Patek Philippe White Gold Baguette Bezel Watch Ref. 3357/2

Patek Philippe White Gold Baguette Bezel Watch Ref. 3357/2

Patek Philippe White Gold Baguette Bezel Watch Ref. 3357/2

Sold Out

 
Patek Philiipe Yellow Gold Pepita Watch Ref. 4121

Patek Philiipe Yellow Gold Pepita Watch Ref. 4121

Patek Philiipe Yellow Gold Pepita Watch Ref. 4121

$55,000 USD
 
Boucheron Yellow Gold Invisible Set Sapphire Watch (New Arrival)

Boucheron Yellow Gold Invisible Set Sapphire Watch (New Arrival)

Boucheron Yellow Gold Invisible Set Sapphire Watch (New Arrival)

$9,500 USD
 
Piaget White Gold Baguette Mechanical Watch Ref. 316089

Piaget White Gold Baguette Mechanical Watch Ref. 316089

Piaget White Gold Baguette Mechanical Watch Ref. 316089

Sold Out

 
Piaget Yellow Gold Baguette Diamond Onyx Galaxy Watch Ref. 74912

Piaget Yellow Gold Baguette Diamond Onyx Galaxy Watch Ref. 74912

Piaget Yellow Gold Baguette Diamond Onyx Galaxy Watch Ref. 74912

Sold Out

 
Piaget White Gold Large Diagonal Baguette Bezel Watch with Onyx Dial 7334A6

Piaget White Gold Large Diagonal Baguette Bezel Watch with Onyx Dial 7334A6

Piaget White Gold Large Diagonal Baguette Bezel Watch with Onyx Dial 7334A6

$18,750 USD
 
IWC White Gold Sapphire and Diamond Cover Watch

IWC White Gold Sapphire and Diamond Cover Watch

IWC White Gold Sapphire and Diamond Cover Watch

$7,800 USD
 
Gubelin Yellow Gold, Sapphire and Diamond Cover Watch

Gubelin Yellow Gold, Sapphire and Diamond Cover Watch

Gubelin Yellow Gold, Sapphire and Diamond Cover Watch

$16,500 USD
 
Piaget Yellow Gold Baguette Diamond & Ruby Cover Watch

Piaget Yellow Gold Baguette Diamond & Ruby Cover Watch

Piaget Yellow Gold Baguette Diamond & Ruby Cover Watch

$350,000 USD
 
Piaget Yellow Gold Lapis Pendant Necklace Watch, 1960s

Piaget Yellow Gold Lapis Pendant Necklace Watch, 1960s

Piaget Yellow Gold Lapis Pendant Necklace Watch, 1960s

$40,000 USD
 
Piaget Yellow Gold Coral Watch by Andre Vassort Ref. 9921V89

Piaget Yellow Gold Coral Watch by Andre Vassort Ref. 9921V89

Piaget Yellow Gold Coral Watch by Andre Vassort Ref. 9921V89

$45,000 USD
 
Piaget White Gold Diamond & Sapphire Watch Ref. 40030

Piaget White Gold Diamond & Sapphire Watch Ref. 40030

Piaget White Gold Diamond & Sapphire Watch Ref. 40030

$140,000 USD
 
Audemars Piguet - Audemars Piguet White Gold Ruby & Diamond Skeleton Watch - The Keystone Watches

Audemars Piguet White Gold Ruby & Diamond Skeleton Watch

Audemars Piguet White Gold Ruby & Diamond Skeleton Watch

$150,000 USD
 
Audemars Piguet Rose Gold Concept Flying Tourbillon Ref 26228, Limited Edition of Five

Audemars Piguet Rose Gold Concept Flying Tourbillon Ref 26228, Limited Edition of Five

Audemars Piguet Rose Gold Concept Flying Tourbillon Ref 26228, Limited Edition of Five

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
 
Piaget Yellow Gold Baguette Bezel with Pave Dial and Diamonds Bracelet

Piaget Yellow Gold Baguette Bezel with Pave Dial and Diamonds Bracelet

Piaget Yellow Gold Baguette Bezel with Pave Dial and Diamonds Bracelet

$52,000 USD
New Arrivals Preview
 
Rolex Yellow Gold Queen Midas Watch Ref. 4314 with Lapis and Diamond Dial (New Arrival)

Rolex Yellow Gold Queen Midas Watch Ref. 4314 with Lapis and Diamond Dial (New Arrival)

Rolex Yellow Gold Queen Midas Watch Ref. 4314 with Lapis and Diamond Dial (New Arrival)

$38,000 USD
 
Patek Philippe White Gold Baguette Diamond Watch Ref. 3540 (New Arrival)

Patek Philippe White Gold Baguette Diamond Watch Ref. 3540 (New Arrival)

Patek Philippe White Gold Baguette Diamond Watch Ref. 3540 (New Arrival)

$30,000 USD
 
Vacheron Constantin Yellow Gold Chronograph Watch Ref. 4178 with Important Provenance (New Arrival)

Vacheron Constantin Yellow Gold Chronograph Watch Ref. 4178 with Important Provenance (New Arrival)

Vacheron Constantin Yellow Gold Chronograph Watch Ref. 4178 with Important Provenance (New Arrival)

$60,000 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 - Audemars Piguet White Gold Rectangular Watch with Lapis Watch (New Arrival) - The Keystone Watches

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
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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