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Patek Philippe Rose Gold Power Reserve Moon Phase Calendar Watch Ref. 5055

Patek Philippe Rose Gold Power Reserve Moon Phase Calendar Watch Ref. 5055

Patek Philippe Rose Gold Power Reserve Moon Phase Calendar Watch Ref. 5055

$29,000 USD
 
Patek Philippe Yellow Gold Nautellipse Ref. 3770

Patek Philippe Yellow Gold Nautellipse Ref. 3770

Patek Philippe Yellow Gold Nautellipse Ref. 3770

$95,000 USD
 
Patek Philippe Yellow Gold Calatrava Watch Ref. 3484 Retailed by Somazzi (New Arrival)

Patek Philippe Yellow Gold Calatrava Watch Ref. 3484 Retailed by Somazzi (New Arrival)

Patek Philippe Yellow Gold Calatrava Watch Ref. 3484 Retailed by Somazzi (New Arrival)

Sold Out

 
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 - Patek Philippe Platinum Ellipse Ref. 5738G - The Keystone Watches

Patek Philippe Platinum Ellipse Ref. 5738G

Patek Philippe Platinum Ellipse Ref. 5738G

$85,000 USD
 
Patek Philippe White Gold Annual Calendar 5054G (New Arrival)

Patek Philippe White Gold Annual Calendar 5054G (New Arrival)

Patek Philippe White Gold Annual Calendar 5054G (New Arrival)

$25,500 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 Yellow Gold Skater Ref. 2425

Patek Philippe Yellow Gold Skater Ref. 2425

Patek Philippe Yellow Gold Skater Ref. 2425

$26,000 USD
 
Patek Philippe White Gold Diamond & Sapphire Cover Watch (New Arrival)

Patek Philippe White Gold Diamond & Sapphire Cover Watch (New Arrival)

Patek Philippe White Gold Diamond & Sapphire Cover Watch (New Arrival)

$19,500 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
 
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
 
Patek Philippe Steel Sculptural Watch Ref. 5091

Patek Philippe Steel Sculptural Watch Ref. 5091

Patek Philippe Steel Sculptural Watch Ref. 5091

Sold Out

 
Patek Philippe Rose Gold Pocket Watch (New Arrival)

Patek Philippe Rose Gold Pocket Watch (New Arrival)

Patek Philippe Rose Gold Pocket Watch (New Arrival)

$9,500 USD
 
Patek Philippe Yellow Gold Golden Ellipse Ref. 3666

Patek Philippe Yellow Gold Golden Ellipse Ref. 3666

Patek Philippe Yellow Gold Golden Ellipse Ref. 3666

Sold Out

 
Patek Philippe Yellow Gold Perpetual Calendar Chronograph Ref. 5270 (New Arrival)

Patek Philippe Yellow Gold Perpetual Calendar Chronograph Ref. 5270 (New Arrival)

Patek Philippe Yellow Gold Perpetual Calendar Chronograph Ref. 5270 (New Arrival)

Sold Out

 
Patek Philippe White Gold Calatrava Gobbi Milano Watch Ref. 3445 with Original Guarantee

Patek Philippe White Gold Calatrava Gobbi Milano Watch Ref. 3445 with Original Guarantee

Patek Philippe White Gold Calatrava Gobbi Milano Watch Ref. 3445 with Original Guarantee

Sold Out

 
Patek Philippe Rectangular Watch Ref. 3557

Patek Philippe Rectangular Watch Ref. 3557

Patek Philippe Rectangular Watch Ref. 3557

Sold Out

 
Patek Philippe - Patek Philippe White Gold Perpetual Calendar Chronograph Ref. 5270G - The Keystone Watches

Patek Philippe White Gold Perpetual Calendar Chronograph Ref. 5270G

Patek Philippe White Gold Perpetual Calendar Chronograph Ref. 5270G

Sold Out

 
Patek Philippe White Gold Perpetual Calendar Watch Ref. 3448

Patek Philippe White Gold Perpetual Calendar Watch Ref. 3448

Patek Philippe White Gold Perpetual Calendar Watch Ref. 3448

$975,000 USD
 
Patek Philippe Yellow Gold Breguet Numerals Ref. 438

Patek Philippe Yellow Gold Breguet Numerals Ref. 438

Patek Philippe Yellow Gold Breguet Numerals Ref. 438

$32,000 USD
 
Patek Philippe - Patek Philippe Yellow Gold Minute Repeater Porcelain Dial Watch Ref. 3979 - The Keystone Watches

Patek Philippe Yellow Gold Minute Repeater Porcelain Dial Watch Ref. 3979

Patek Philippe Yellow Gold Minute Repeater Porcelain Dial Watch Ref. 3979

$450,000 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.

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