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Patek Philippe Pink Gold for Guillermin Paris, Circa 1947

Patek Philippe Pink Gold for Guillermin Paris, Circa 1947

Patek Philippe Pink Gold for Guillermin Paris, Circa 1947

Sold Out

 
Rolex Yellow Gold Datejust Ref. 68278G (New Arrival)

Rolex Yellow Gold Datejust Ref. 68278G (New Arrival)

Rolex Yellow Gold Datejust Ref. 68278G (New Arrival)

$18,500 USD
 
Audemars Piguet Platinum Quantieme Perpetual Ref. 25717 with Original Box and Papers (New Arrival)

Audemars Piguet Platinum Quantieme Perpetual Ref. 25717 with Original Box and Papers (New Arrival)

Audemars Piguet Platinum Quantieme Perpetual Ref. 25717 with Original Box and Papers (New Arrival)

$55,000 USD
 
Rolex Steel Zenith Daytona Ref. 16520 with T Serial (New Arrival)

Rolex Steel Zenith Daytona Ref. 16520 with T Serial (New Arrival)

Rolex Steel Zenith Daytona Ref. 16520 with T Serial (New Arrival)

$28,500 USD
 
Patek Philippe Pink Gold Calatrava Ref. 1578 with Archive Circa 1953 (New Arrival)

Patek Philippe Pink Gold Calatrava Ref. 1578 with Archive Circa 1953 (New Arrival)

Patek Philippe Pink Gold Calatrava Ref. 1578 with Archive Circa 1953 (New Arrival)

Sold Out

 
Rene Boivin Yellow Gold Aquamarine Bracelet Watch, Circa 1950

Rene Boivin Yellow Gold Aquamarine Bracelet Watch, Circa 1950

Rene Boivin Yellow Gold Aquamarine Bracelet Watch, Circa 1950

$85,000 USD
 
Patek Philippe - Patek Philippe Steel Nautilus Ref. 3800 with White Dial (New Arrival) - The Keystone Watches

Patek Philippe Steel Nautilus Ref. 3800 with White Dial (New Arrival)

Patek Philippe Steel Nautilus Ref. 3800 with White Dial (New Arrival)

Sold Out

 
Rolex Yellow Gold Day-Date Rainbow Watch Ref. 18188, Circa 1983

Rolex Yellow Gold Day-Date Rainbow Watch Ref. 18188, Circa 1983

Rolex Yellow Gold Day-Date Rainbow Watch Ref. 18188, Circa 1983

$1,050,000 USD
 
Patek Philippe Rose Gold Fagiolino Chronograph Ref. 591 retailed by Walser Wald (Private Sale)

Patek Philippe Rose Gold Fagiolino Chronograph Ref. 591 retailed by Walser Wald (Private Sale)

Patek Philippe Rose Gold Fagiolino Chronograph Ref. 591 retailed by Walser Wald (Private Sale)

$225,000 USD
 
Audemars Piguet Yellow Gold Perpetual Calendar Minute Repeater Pocket Watch, Retailed by Asprey (New Arrival)

Audemars Piguet Yellow Gold Perpetual Calendar Minute Repeater Pocket Watch, Retailed by Asprey (New Arrival)

Audemars Piguet Yellow Gold Perpetual Calendar Minute Repeater Pocket Watch, Retailed by Asprey (New Arrival)

$155,000 USD
 
Rolex Steel Daytona Ref. 16520 U-Serial with Paper (New Arrival)

Rolex Steel Daytona Ref. 16520 U-Serial with Paper (New Arrival)

Rolex Steel Daytona Ref. 16520 U-Serial with Paper (New Arrival)

Sold Out

 
Rolex Yellow Gold Day-Date Ref. 18148 Diamond & Ruby Bezel and Dial

Rolex Yellow Gold Day-Date Ref. 18148 Diamond & Ruby Bezel and Dial

Rolex Yellow Gold Day-Date Ref. 18148 Diamond & Ruby Bezel and Dial

$85,000 USD
 
Patek Philippe Pink Gold Calatrava Watch Ref. 570 (New Arrival)

Patek Philippe Pink Gold Calatrava Watch Ref. 570 (New Arrival)

Patek Philippe Pink Gold Calatrava Watch Ref. 570 (New Arrival)

Sold Out

 
Patek Philippe Yellow Gold Chronograph Watch Ref. 591, Incredible Original Condition

Patek Philippe Yellow Gold Chronograph Watch Ref. 591, Incredible Original Condition

Patek Philippe Yellow Gold Chronograph Watch Ref. 591, Incredible Original Condition

$165,000 USD
 
Patek Philippe Steel Nautilus Ref. 3800 with Roman Numeral Dial

Patek Philippe Steel Nautilus Ref. 3800 with Roman Numeral Dial

Patek Philippe Steel Nautilus Ref. 3800 with Roman Numeral Dial

$68,000 USD
 
Patek Philippe Pink Gold Rectangular Watch Ref. 425 Retailed by Tiffany & Co.

Patek Philippe Pink Gold Rectangular Watch Ref. 425 Retailed by Tiffany & Co.

Patek Philippe Pink Gold Rectangular Watch Ref. 425 Retailed by Tiffany & Co.

$35,000 USD
 
Cartier Yellow Gold Officers Watch, 1910

Cartier Yellow Gold Officers Watch, 1910

Cartier Yellow Gold Officers Watch, 1910

$19,000 USD
 
Andersen Geneve Yellow Gold Minute Repeater and Perpetual Calendar Unique Piece

Andersen Geneve Yellow Gold Minute Repeater and Perpetual Calendar Unique Piece

Andersen Geneve Yellow Gold Minute Repeater and Perpetual Calendar Unique Piece

Sold Out

 
Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 3448, Circa 1977

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 3448, Circa 1977

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 3448, Circa 1977

$225,000 USD
 
Audemars Piguet White Gold Royal Oak Ref. 14949

Audemars Piguet White Gold Royal Oak Ref. 14949

Audemars Piguet White Gold Royal Oak Ref. 14949

$55,000 USD
 
Rolex Yellow Gold Day-Date Ruby & Diamond Watch Ref. 18068

Rolex Yellow Gold Day-Date Ruby & Diamond Watch Ref. 18068

Rolex Yellow Gold Day-Date Ruby & Diamond Watch Ref. 18068

$650,000 USD
 
Rolex Yellow Gold GMT-Master Diamond Ruby Sapphire Watch Ref. 16758 (Private Sale)

Rolex Yellow Gold GMT-Master Diamond Ruby Sapphire Watch Ref. 16758 (Private Sale)

Rolex Yellow Gold GMT-Master Diamond Ruby Sapphire Watch Ref. 16758 (Private Sale)

$600,000 USD
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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.

Stay in touch.

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