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Patek Philippe Yellow Gold Chronograph Watch Ref. 1506, Circa 1942

Patek Philippe Yellow Gold Chronograph Watch Ref. 1506, Circa 1942

Patek Philippe Yellow Gold Chronograph Watch Ref. 1506, Circa 1942

$450,000 USD
 
Patek Philippe Yellow Gold Calatrava Black Dial Scallop Bracelet Watch Ref. 2526

Patek Philippe Yellow Gold Calatrava Black Dial Scallop Bracelet Watch Ref. 2526

Patek Philippe Yellow Gold Calatrava Black Dial Scallop Bracelet Watch Ref. 2526

$275,000 USD
 
Vacheron Constantin Platinum Perpetual Calendar Diamond & Sapphire Watch Ref. 43031

Vacheron Constantin Platinum Perpetual Calendar Diamond & Sapphire Watch Ref. 43031

Vacheron Constantin Platinum Perpetual Calendar Diamond & Sapphire Watch Ref. 43031

$85,000 USD
 
Patek Philippe Yellow Gold Enamel Dial Calatrava Watch Ref. 2526

Patek Philippe Yellow Gold Enamel Dial Calatrava Watch Ref. 2526

Patek Philippe Yellow Gold Enamel Dial Calatrava Watch Ref. 2526

Sold Out

 
Patek Philippe Perpetual Calendar Watch Ref. 3448, Late Series with Sapphire Crystal

Patek Philippe Perpetual Calendar Watch Ref. 3448, Late Series with Sapphire Crystal

Patek Philippe Perpetual Calendar Watch Ref. 3448, Late Series with Sapphire Crystal

$275,000 USD
 
Cartier Pink Gold Crash with Unusual Burgundy Numerals, Circa 1994

Cartier Pink Gold Crash with Unusual Burgundy Numerals, Circa 1994

Cartier Pink Gold Crash with Unusual Burgundy Numerals, Circa 1994

$500,000 USD
 
Cartier Yellow Gold Ronde Escalier, Circa 1940

Cartier Yellow Gold Ronde Escalier, Circa 1940

Cartier Yellow Gold Ronde Escalier, Circa 1940

$19,500 USD
 
Patek Philippe Yellow Gold Diamond Sapphire Watch, Ref. 3319

Patek Philippe Yellow Gold Diamond Sapphire Watch, Ref. 3319

Patek Philippe Yellow Gold Diamond Sapphire Watch, Ref. 3319

$20,000 USD
 
Rolex Yellow Gold Datejust Ref. 6913 with Oxblood Stella Dial

Rolex Yellow Gold Datejust Ref. 6913 with Oxblood Stella Dial

Rolex Yellow Gold Datejust Ref. 6913 with Oxblood Stella Dial

$25,000 USD
 
Rolex Steel Paul Newman Daytona Ref. 6262

Rolex Steel Paul Newman Daytona Ref. 6262

Rolex Steel Paul Newman Daytona Ref. 6262

Sold Out

 
Patek Philippe Pink Gold Two-Tone Dial Watch Ref. 130, Circa 1953

Patek Philippe Pink Gold Two-Tone Dial Watch Ref. 130, Circa 1953

Patek Philippe Pink Gold Two-Tone Dial Watch Ref. 130, Circa 1953

Sold Out

 
Patek Philippe Yellow Gold Tegolino Watch Ref. 425 with Black Dial Retailed by Gubelin

Patek Philippe Yellow Gold Tegolino Watch Ref. 425 with Black Dial Retailed by Gubelin

Patek Philippe Yellow Gold Tegolino Watch Ref. 425 with Black Dial Retailed by Gubelin

Sold Out

 
Rolex Steel Submariner Ref. 5513 with Nice Patina, Circa 1984 (New Arrival)

Rolex Steel Submariner Ref. 5513 with Nice Patina, Circa 1984 (New Arrival)

Rolex Steel Submariner Ref. 5513 with Nice Patina, Circa 1984 (New Arrival)

Sold Out

 
Patek Philippe Yellow Gold Ellipse Bracelet Watch Ref. 3838

Patek Philippe Yellow Gold Ellipse Bracelet Watch Ref. 3838

Patek Philippe Yellow Gold Ellipse Bracelet Watch Ref. 3838

$19,500 USD
 
Patek Philippe Yellow Gold Golden Ellipse Ref. 3566 Retailed by Tiffany & Co. (New Arrival)

Patek Philippe Yellow Gold Golden Ellipse Ref. 3566 Retailed by Tiffany & Co. (New Arrival)

Patek Philippe Yellow Gold Golden Ellipse Ref. 3566 Retailed by Tiffany & Co. (New Arrival)

Sold Out

 
Patek Philippe Yellow Gold Chronograph Two-Tone Dial Watch Ref. 1463

Patek Philippe Yellow Gold Chronograph Two-Tone Dial Watch Ref. 1463

Patek Philippe Yellow Gold Chronograph Two-Tone Dial Watch Ref. 1463

$300,000 USD
 
Patek Philippe Rose Gold Perpetual Calendar Ref. 3945 (New Arrival)

Patek Philippe Rose Gold Perpetual Calendar Ref. 3945 (New Arrival)

Patek Philippe Rose Gold Perpetual Calendar Ref. 3945 (New Arrival)

Sold Out

 
Breguet Yellow Gold Empire Watch, Circa 1955

Breguet Yellow Gold Empire Watch, Circa 1955

Breguet Yellow Gold Empire Watch, Circa 1955

$97,500 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)

Sold Out

 
Breguet Souscription Grand Complication Set Watch and Pocket Watch, Circa 1992

Breguet Souscription Grand Complication Set Watch and Pocket Watch, Circa 1992

Breguet Souscription Grand Complication Set Watch and Pocket Watch, Circa 1992

$225,000 USD
 
Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 1518, Made in 1951

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 1518, Made in 1951

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 1518, Made in 1951

"Price upon request"
 
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

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New Arrivals Preview
 
Audemars Piguet John Shaeffer Star Wheel Minute Repeater Ref. 25881OR (New Arrival)

Audemars Piguet John Shaeffer Star Wheel Minute Repeater Ref. 25881OR (New Arrival)

Audemars Piguet John Shaeffer Star Wheel Minute Repeater Ref. 25881OR (New Arrival)

$300,000 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
 
Audemars Piguet Royal Oak Dual Time Watch Ref. 25730 with Bright Yellow Dial (New Arrival)

Audemars Piguet Royal Oak Dual Time Watch Ref. 25730 with Bright Yellow Dial (New Arrival)

Audemars Piguet Royal Oak Dual Time Watch Ref. 25730 with Bright Yellow Dial (New Arrival)

$105,000 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 White Gold Rectangular Watch with Lapis Watch (New Arrival)

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
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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