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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Watch Ref. 5040 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5040

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5040

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Patek Philippe - Patek Philippe White Gold Vintage Square Watch Ref. 4222 - The Keystone Watches

Patek Philippe White Gold Vintage Square Watch Ref. 4222

Patek Philippe White Gold Vintage Square Watch Ref. 4222

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Patek Philippe - Patek Philippe Yellow Gold Vintage Automatic Watch Ref. 3861/02 with Papers - The Keystone Watches

Patek Philippe Yellow Gold Vintage Automatic Watch Ref. 3861/02 with Papers

Patek Philippe Yellow Gold Vintage Automatic Watch Ref. 3861/02 with Papers

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Patek Philippe White Gold Ellipse Ref. 4175 with Khanjar Dial

Patek Philippe White Gold Ellipse Ref. 4175 with Khanjar Dial

Patek Philippe White Gold Ellipse Ref. 4175 with Khanjar Dial

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Patek Philippe - Patek Philippe White Gold Annual Calendar Ref. 5396G-014 - The Keystone Watches

Patek Philippe White Gold Annual Calendar Ref. 5396G-014

Patek Philippe White Gold Annual Calendar Ref. 5396G-014

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Patek Philippe - Patek Philippe White Gold Golden Ellipse Ref. 3566 - The Keystone Watches

Patek Philippe White Gold Golden Ellipse Ref. 3566

Patek Philippe White Gold Golden Ellipse Ref. 3566

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Patek Philippe White Gold Annual Calendar Ref. 5205

Patek Philippe White Gold Annual Calendar Ref. 5205

Sold Out

 
Patek Philippe Yellow Gold Calatrava Ref. 3796

Patek Philippe Yellow Gold Calatrava Ref. 3796

Patek Philippe Yellow Gold Calatrava Ref. 3796

Sold Out

 

Patek Philippe Yellow Gold Watch Ref. 3506

Patek Philippe Yellow Gold Watch Ref. 3506

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Patek Philippe - Patek Philippe White Gold Ellipse Ref. 4223 - The Keystone Watches

Patek Philippe White Gold Ellipse Ref. 4223

Patek Philippe White Gold Ellipse Ref. 4223

Sold Out

 
Patek Philippe - Patek Philippe White Gold Mini Ellipse Ref. 3349 - The Keystone Watches

Patek Philippe White Gold Mini Ellipse Ref. 3349

Patek Philippe White Gold Mini Ellipse Ref. 3349

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Patek Philippe - Patek Philippe White Gold Ellipse Ref. 3546 - The Keystone Watches

Patek Philippe White Gold Ellipse Ref. 3546

Patek Philippe White Gold Ellipse Ref. 3546

Sold Out

 
Patek Philippe - Patek Philippe Steel Aquanaut Ref. 5065 (New Arrival) - The Keystone Watches

Patek Philippe Steel Aquanaut Ref. 5065 (New Arrival)

Patek Philippe Steel Aquanaut Ref. 5065 (New Arrival)

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Patek Philippe - Patek Philippe Rose Gold Calatrava Ref. 5022 on Bracelet - The Keystone Watches

Patek Philippe Rose Gold Calatrava Ref. 5022 on Bracelet

Patek Philippe Rose Gold Calatrava Ref. 5022 on Bracelet

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Patek Philippe White Gold Ellipse Ref. 3544 with JPE Bracelet

Patek Philippe White Gold Ellipse Ref. 3544 with JPE Bracelet

Patek Philippe White Gold Ellipse Ref. 3544 with JPE Bracelet

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Patek Philippe - Patek Philippe White Gold Calatrava Ref. 3919 - The Keystone Watches

Patek Philippe White Gold Calatrava Ref. 3919

Patek Philippe White Gold Calatrava Ref. 3919

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Retrograde Ref. 5059P (New Arrival) - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Retrograde Ref. 5059P (New Arrival)

Patek Philippe Platinum Perpetual Calendar Retrograde Ref. 5059P (New Arrival)

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Patek Philippe Yellow Gold Automatic Ellipse Ref. 3738

Patek Philippe Yellow Gold Automatic Ellipse Ref. 3738

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Patek Philippe Rose Gold Square Watch Ref. 2472 with Ribbed Fluted Case and Bracelet

Patek Philippe Rose Gold Square Watch Ref. 2472 with Ribbed Fluted Case and Bracelet

Patek Philippe Rose Gold Square Watch Ref. 2472 with Ribbed Fluted Case and Bracelet

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Patek Philippe - Patek Philippe White Gold Annual Calendar Ref. 5396 - The Keystone Watches

Patek Philippe White Gold Annual Calendar Ref. 5396

Patek Philippe White Gold Annual Calendar Ref. 5396

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Patek Philippe - Patek Philippe Steel Aquanaut Ref. 5066 with Box and Papers (New Arrival) - The Keystone Watches

Patek Philippe Steel Aquanaut Ref. 5066 with Box and Papers (New Arrival)

Patek Philippe Steel Aquanaut Ref. 5066 with Box and Papers (New Arrival)

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Patek Philippe Steel Nautilus Ref. 3800

Patek Philippe Steel Nautilus Ref. 3800

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New Arrivals Preview
 
Rolex Yellow Gold Queen Midas Watch Ref. 4314 with Lapis and Diamond Dial (New Arrival)

Rolex Yellow Gold Queen Midas Watch Ref. 4314 with Lapis and Diamond Dial (New Arrival)

Rolex Yellow Gold Queen Midas Watch Ref. 4314 with Lapis and Diamond Dial (New Arrival)

$38,000 USD
 
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
 
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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