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Patek Philippe White Gold Golden Ellipse Ref. 3545

Patek Philippe White Gold Golden Ellipse Ref. 3545

Patek Philippe White Gold Golden Ellipse Ref. 3545

Sold Out

 
Patek Philippe - Patek Philippe Platinum Perpetual Calendar Chronograph Ref. 3970P with Original Box and Papers - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Chronograph Ref. 3970P with Original Box and Papers

Patek Philippe Platinum Perpetual Calendar Chronograph Ref. 3970P with Original Box and Papers

"Price upon request"
 
Patek Philippe - Patek Philippe Steel Calatrava Ref. 3466 - The Keystone Watches

Patek Philippe Steel Calatrava Ref. 3466

Patek Philippe Steel Calatrava Ref. 3466

$27,000 USD
 
Patek Philippe - Patek Philippe Yellow Gold Calatrava Ref. 3919J - The Keystone Watches

Patek Philippe Yellow Gold Calatrava Ref. 3919J

Patek Philippe Yellow Gold Calatrava Ref. 3919J

Sold Out

 
Patek Philippe White Gold Bracelet Watch Ref. 3430

Patek Philippe White Gold Bracelet Watch Ref. 3430

Patek Philippe White Gold Bracelet Watch Ref. 3430

$15,000 USD
 
Patek Philippe White Gold Golden Ellipse Ref. 3546 (New Arrival)

Patek Philippe White Gold Golden Ellipse Ref. 3546 (New Arrival)

Patek Philippe White Gold Golden Ellipse Ref. 3546 (New Arrival)

Sold Out

 
Patek Philippe - Patek Philippe Steel Sector Dial Pocket Watch, Circa 1921 (New Arrival) - The Keystone Watches

Patek Philippe Steel Sector Dial Pocket Watch, Circa 1921 (New Arrival)

Patek Philippe Steel Sector Dial Pocket Watch, Circa 1921 (New Arrival)

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Golden Ellipse Ref. 3546 - The Keystone Watches

Patek Philippe Yellow Gold Golden Ellipse Ref. 3546

Patek Philippe Yellow Gold Golden Ellipse Ref. 3546

$14,500 USD
 
Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 2497 Retailed by Gubelin, Second 2497 Produced

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 2497 Retailed by Gubelin, Second 2497 Produced

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 2497 Retailed by Gubelin, Second 2497 Produced

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Tonneau Ref. 2469 - The Keystone Watches

Patek Philippe Yellow Gold Tonneau Ref. 2469

Patek Philippe Yellow Gold Tonneau Ref. 2469

$19,800 USD
 
Patek Philippe White Gold & Yellow Gold Rectangular Watch

Patek Philippe White Gold & Yellow Gold Rectangular Watch

Patek Philippe White Gold & Yellow Gold Rectangular Watch

$32,000 USD
 
Patek Philippe Yellow Gold Calatrava Breguet Numerals Ref. 2533 (New Arrival)

Patek Philippe Yellow Gold Calatrava Breguet Numerals Ref. 2533 (New Arrival)

Patek Philippe Yellow Gold Calatrava Breguet Numerals Ref. 2533 (New Arrival)

Sold Out

 
Patek Philippe Yellow Gold Black Dial Calatrava Watch Ref. 3514

Patek Philippe Yellow Gold Black Dial Calatrava Watch Ref. 3514

Patek Philippe Yellow Gold Black Dial Calatrava Watch Ref. 3514

$48,000 USD
 
Patek Philippe - Patek Philippe Yellow Gold World Time Watch Ref. 1415 - The Keystone Watches

Patek Philippe Yellow Gold World Time Watch Ref. 1415

Patek Philippe Yellow Gold World Time Watch Ref. 1415

Sold Out

 
Patek Philippe Yellow Gold Golden Rule Ref. 2526, Retailed by Tiffany & Co.

Patek Philippe Yellow Gold Golden Rule Ref. 2526, Retailed by Tiffany & Co.

Patek Philippe Yellow Gold Golden Rule Ref. 2526, Retailed by Tiffany & Co.

Sold Out

 
Patek Philippe White Gold Baguette Diamond Watch Ref. 3540

Patek Philippe White Gold Baguette Diamond Watch Ref. 3540

Patek Philippe White Gold Baguette Diamond Watch Ref. 3540

$30,000 USD
 
Patek Philippe Yellow & White Gold Gubelin Art Deco Watch

Patek Philippe Yellow & White Gold Gubelin Art Deco Watch

Patek Philippe Yellow & White Gold Gubelin Art Deco Watch

$29,500 USD
 
Patek Philippe Yellow Gold Chronograph Ref. 1579, Retailed by Somazzi

Patek Philippe Yellow Gold Chronograph Ref. 1579, Retailed by Somazzi

Patek Philippe Yellow Gold Chronograph Ref. 1579, Retailed by Somazzi

Sold Out

 
Patek Philipp Steel Jumbo UFO Ref. 3580

Patek Philipp Steel Jumbo UFO Ref. 3580

Patek Philipp Steel Jumbo UFO Ref. 3580

$16,000 USD
 
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
 
Patek Philippe Yellow Gold Tonneau Gondolo Watch

Patek Philippe Yellow Gold Tonneau Gondolo Watch

Patek Philippe Yellow Gold Tonneau Gondolo Watch

$18,500 USD
 
Patek Philippe Yellow Gold Hour Glass Ref. 2456

Patek Philippe Yellow Gold Hour Glass Ref. 2456

Patek Philippe Yellow Gold Hour Glass Ref. 2456

$20,000 USD
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New Arrivals Preview
 
Piaget Two Tone Polo Ref. 8131C701 (New Arrival)

Piaget Two Tone Polo Ref. 8131C701 (New Arrival)

Piaget Two Tone Polo Ref. 8131C701 (New Arrival)

$18,500 USD
 
Rolex Yellow Gold Oyster Perpetual Day-Date Ref. 1803/8 with Claw Dial (New Arrival)

Rolex Yellow Gold Oyster Perpetual Day-Date Ref. 1803/8 with Claw Dial (New Arrival)

Rolex Yellow Gold Oyster Perpetual Day-Date Ref. 1803/8 with Claw Dial (New Arrival)

$10,800 USD
 
Audemars Piguet Steel Transitional Jumbo Royal Oak Ref. 5402 Rare No Serial Watch (New Arrival)

Audemars Piguet Steel Transitional Jumbo Royal Oak Ref. 5402 Rare No Serial Watch (New Arrival)

Audemars Piguet Steel Transitional Jumbo Royal Oak Ref. 5402 Rare No Serial Watch (New Arrival)

$80,000 USD
 
Patek Philippe White Gold Ref. 2592 (New Arrival)

Patek Philippe White Gold Ref. 2592 (New Arrival)

Patek Philippe White Gold Ref. 2592 (New Arrival)

$11,000 USD
 
Audemars Piguet Round UFO-Style Bracelet Watch (New Arrival)

Audemars Piguet Round UFO-Style Bracelet Watch (New Arrival)

Audemars Piguet Round UFO-Style Bracelet Watch (New Arrival)

$10,500 USD
 
Tissot Steel Chronograph with Black Gilt Dial (New Arrival)

Tissot Steel Chronograph with Black Gilt Dial (New Arrival)

Tissot Steel Chronograph with Black Gilt Dial (New Arrival)

$16,000 USD
 
Vacheron Constantin - Vacheron Constantin Yellow Gold Chronograph Watch Ref. 4178 with Important Provenance (New Arrival) - The Keystone Watches

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
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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