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Rolex White Gold GMT Master II Ref. 116759SARU Sapphire and Ruby Bezel with Pave Diamond Dial and Card (New Arrival)

Rolex White Gold GMT Master II Ref. 116759SARU Sapphire and Ruby Bezel with Pave Diamond Dial and Card (New Arrival)

Rolex White Gold GMT Master II Ref. 116759SARU Sapphire and Ruby Bezel with Pave Diamond Dial and Card (New Arrival)

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Rolex White Gold GMT-Master II Ref. 116759SA (New Arrival)

Rolex White Gold GMT-Master II Ref. 116759SA (New Arrival)

Rolex White Gold GMT-Master II Ref. 116759SA (New Arrival)

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A. Lange & Sohne White Gold Little Lange 1 Ref. 181.839 (New Arrival)

A. Lange & Sohne White Gold Little Lange 1 Ref. 181.839 (New Arrival)

A. Lange & Sohne White Gold Little Lange 1 Ref. 181.839 (New Arrival)

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)

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Patek Philippe Yellow Gold Golden Ellipse Ref. 3604 with Copper Dial, Recently Serviced

Patek Philippe Yellow Gold Golden Ellipse Ref. 3604 with Copper Dial, Recently Serviced

Patek Philippe Yellow Gold Golden Ellipse Ref. 3604 with Copper Dial, Recently Serviced

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Audemars Piguet Platinum Grand Sonnerie Skeleton Watch with Diamonds, Possibly Unique

Audemars Piguet Platinum Grand Sonnerie Skeleton Watch with Diamonds, Possibly Unique

Audemars Piguet Platinum Grand Sonnerie Skeleton Watch with Diamonds, Possibly Unique

Sold Out

 
Patek Philippe Aquanaut Japan Edition Watch Ref. 5066 (New Arrival)

Patek Philippe Aquanaut Japan Edition Watch Ref. 5066 (New Arrival)

Patek Philippe Aquanaut Japan Edition Watch Ref. 5066 (New Arrival)

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Patek Philippe White Gold Emerald Diamond Watch Ref. 3833 (New Arrival)

Patek Philippe White Gold Emerald Diamond Watch Ref. 3833 (New Arrival)

Patek Philippe White Gold Emerald Diamond Watch Ref. 3833 (New Arrival)

Sold Out

 
Patek Philippe White Gold Perpetual Calendar Chronograph Second Series, 3970

Patek Philippe White Gold Perpetual Calendar Chronograph Second Series, 3970

Patek Philippe White Gold Perpetual Calendar Chronograph Second Series, 3970

"Price upon request"
 
Rolex Yellow Gold Datejust Rainbow Watch Ref. 68058

Rolex Yellow Gold Datejust Rainbow Watch Ref. 68058

Rolex Yellow Gold Datejust Rainbow Watch Ref. 68058

"Price upon request"
 
Patek Philippe White Gold Perpetual Calendar 3448 on Original Bracelet

Patek Philippe White Gold Perpetual Calendar 3448 on Original Bracelet

Patek Philippe White Gold Perpetual Calendar 3448 on Original Bracelet

"Price upon request"
 
Richard Mille Rose Gold Tourbillon RM002 Box and Papers, Recently Serviced

Richard Mille Rose Gold Tourbillon RM002 Box and Papers, Recently Serviced

Richard Mille Rose Gold Tourbillon RM002 Box and Papers, Recently Serviced

Sold Out

 
Patek Philippe Steel Chronograph Ref. 130, Retailed by Gubelin

Patek Philippe Steel Chronograph Ref. 130, Retailed by Gubelin

Patek Philippe Steel Chronograph Ref. 130, Retailed by Gubelin

Sold Out

 
Cartier Platinum Mecanique Chinoise Tortue (New Arrival)

Cartier Platinum Mecanique Chinoise Tortue (New Arrival)

Cartier Platinum Mecanique Chinoise Tortue (New Arrival)

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Patek Philippe Yellow Gold Chronograph Watch Ref. 130 (New Arrival)

Patek Philippe Yellow Gold Chronograph Watch Ref. 130 (New Arrival)

Patek Philippe Yellow Gold Chronograph Watch Ref. 130 (New Arrival)

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A. Lange & Sohne Tourbillon Pour le Merite Ref. 701.005, Only 50 Pieces

A. Lange & Sohne Tourbillon Pour le Merite Ref. 701.005, Only 50 Pieces

A. Lange & Sohne Tourbillon Pour le Merite Ref. 701.005, Only 50 Pieces

Sold Out

 
Rolex Yellow Gold 1940s Cover Watch in Original Box

Rolex Yellow Gold 1940s Cover Watch in Original Box

Rolex Yellow Gold 1940s Cover Watch in Original Box

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Rolex Yellow Gold Ovettone Datejust Ref. 6305 with Unusual Diamond Markers with Original Papers

Rolex Yellow Gold Ovettone Datejust Ref. 6305 with Unusual Diamond Markers with Original Papers

Rolex Yellow Gold Ovettone Datejust Ref. 6305 with Unusual Diamond Markers with Original Papers

Sold Out

 
Patek Philippe White Gold Beta 21 Ref. 3603 with Original Box and Papers

Patek Philippe White Gold Beta 21 Ref. 3603 with Original Box and Papers

Patek Philippe White Gold Beta 21 Ref. 3603 with Original Box and Papers

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Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 3970, Second Series

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 3970, Second Series

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 3970, Second Series

"Price upon request"
 
Breguet Platinum and Rose Gold Tourbillon Ref. 3457 (New Arrival)

Breguet Platinum and Rose Gold Tourbillon Ref. 3457 (New Arrival)

Breguet Platinum and Rose Gold Tourbillon Ref. 3457 (New Arrival)

Sold Out

 
Cartier Tank Coussin Bamboo Ref. 78102 (New Arrival)

Cartier Tank Coussin Bamboo Ref. 78102 (New Arrival)

Cartier Tank Coussin Bamboo Ref. 78102 (New Arrival)

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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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