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Patek Philippe - Patek Philippe Steel Automatic Backwinbd Watch Ref. 3580 with Bracelet and Papers - The Keystone Watches

Patek Philippe Steel Automatic Backwinbd Watch Ref. 3580 with Bracelet and Papers

Patek Philippe Steel Automatic Backwinbd Watch Ref. 3580 with Bracelet and Papers

Sold Out

 
Patek Philippe - Patek Philippe Nautilus Watch Ref. 3800 with Box and Papers - The Keystone Watches

Patek Philippe Nautilus Watch Ref. 3800 with Box and Papers

Patek Philippe Nautilus Watch Ref. 3800 with Box and Papers

Sold Out

 
Patek Philippe - Patek Philippe Platinum Nautilus Watch Ref. 3800 - The Keystone Watches

Patek Philippe Platinum Nautilus Watch Ref. 3800

Patek Philippe Platinum Nautilus Watch Ref. 3800

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Rectangular Watch Ref. 2415 - The Keystone Watches

Patek Philippe Yellow Gold Rectangular Watch Ref. 2415

Patek Philippe Yellow Gold Rectangular Watch Ref. 2415

Sold Out

 
Patek Philippe - Patek Philippe White Gold Annual Calendar Watch Ref. 5037 - The Keystone Watches

Patek Philippe White Gold Annual Calendar Watch Ref. 5037

Patek Philippe White Gold Annual Calendar Watch Ref. 5037

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Patek Philippe - Patek Philippe White Gold Perpetual Calendar Watch Ref. 3940 - The Keystone Watches

Patek Philippe White Gold Perpetual Calendar Watch Ref. 3940

Patek Philippe White Gold Perpetual Calendar Watch Ref. 3940

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Nautilus Ref. 3800 with Original Warranty - The Keystone Watches

Patek Philippe Yellow Gold Nautilus Ref. 3800 with Original Warranty

Patek Philippe Yellow Gold Nautilus Ref. 3800 with Original Warranty

Sold Out

 
Patek Philippe - Patek Philippe White Gold, Baguette Diamond and Onyx Watch Ref. 3625 (NEW ARRIVAL) - The Keystone Watches

Patek Philippe White Gold, Baguette Diamond and Onyx Watch Ref. 3625 (NEW ARRIVAL)

Patek Philippe White Gold, Baguette Diamond and Onyx Watch Ref. 3625 (NEW ARRIVAL)

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Patek Philippe - Patek Philippe Diamond Cover Watch Ref. 3006 (NEW ARRIVAL) - The Keystone Watches

Patek Philippe Diamond Cover Watch Ref. 3006 (NEW ARRIVAL)

Patek Philippe Diamond Cover Watch Ref. 3006 (NEW ARRIVAL)

Sold Out

 
Patek Philippe - Patek Philippe White Gold Ellipse Ref. 3577 - The Keystone Watches

Patek Philippe White Gold Ellipse Ref. 3577

Patek Philippe White Gold Ellipse Ref. 3577

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Patek Philippe - Patek Philippe Yellow Gold Pocket Watch with Original Paperwork - The Keystone Watches

Patek Philippe Yellow Gold Pocket Watch with Original Paperwork

Patek Philippe Yellow Gold Pocket Watch with Original Paperwork

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Patek Philippe - Patek Philippe Yellow Gold Nautilus Ref. 3800 with Box and Papers - The Keystone Watches

Patek Philippe Yellow Gold Nautilus Ref. 3800 with Box and Papers

Patek Philippe Yellow Gold Nautilus Ref. 3800 with Box and Papers

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Patek Philippe - Patek Philippe Yellow Gold Nautilus Diamond Emerald Watch Ref. 3800/5 - The Keystone Watches

Patek Philippe Yellow Gold Nautilus Diamond Emerald Watch Ref. 3800/5

Patek Philippe Yellow Gold Nautilus Diamond Emerald Watch Ref. 3800/5

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Patek Philippe - Patek Philippe Platinum Calatrava Sapphire Dial Watch Ref. 3796 - The Keystone Watches

Patek Philippe Platinum Calatrava Sapphire Dial Watch Ref. 3796

Patek Philippe Platinum Calatrava Sapphire Dial Watch Ref. 3796

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Patek Philippe - Patek Philippe White Gold Calatrava Watch Ref. 3759 with Original Diamond Bezel and Dial - The Keystone Watches

Patek Philippe White Gold Calatrava Watch Ref. 3759 with Original Diamond Bezel and Dial

Patek Philippe White Gold Calatrava Watch Ref. 3759 with Original Diamond Bezel and Dial

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Patek Philippe - Patek Philippe White Gold Backwind Calatrava Ref. 3569 - The Keystone Watches

Patek Philippe White Gold Backwind Calatrava Ref. 3569

Patek Philippe White Gold Backwind Calatrava Ref. 3569

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Patek Philippe - Patek Philippe Yellow Gold Enamel Engraved Pocket Watch from 1921 - The Keystone Watches

Patek Philippe Yellow Gold Enamel Engraved Pocket Watch from 1921

Patek Philippe Yellow Gold Enamel Engraved Pocket Watch from 1921

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Patek Philippe Steel Nautilus Ref. 3800 with Rare Arabic Numeral Dial and Original Warranty

Patek Philippe Steel Nautilus Ref. 3800 with Rare Arabic Numeral Dial and Original Warranty

Patek Philippe Steel Nautilus Ref. 3800 with Rare Arabic Numeral Dial and Original Warranty

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Patek Philippe - Patek Philippe Yellow Gold Bracelet Watch Ref. 3860 with Box and Papers - The Keystone Watches

Patek Philippe Yellow Gold Bracelet Watch Ref. 3860 with Box and Papers

Patek Philippe Yellow Gold Bracelet Watch Ref. 3860 with Box and Papers

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Patek Philippe - Patek Philippe Steel Nautilus Watch Ref. 3700 - The Keystone Watches

Patek Philippe Steel Nautilus Watch Ref. 3700

Patek Philippe Steel Nautilus Watch Ref. 3700

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Patek Philippe - Patek Philippe Steel Aquanaut Ref. 5060 with Box and Papers - The Keystone Watches

Patek Philippe Steel Aquanaut Ref. 5060 with Box and Papers

Patek Philippe Steel Aquanaut Ref. 5060 with Box and Papers

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Perpetual Calendar Ref. 3448 - The Keystone Watches

Patek Philippe Yellow Gold Perpetual Calendar Ref. 3448

Patek Philippe Yellow Gold Perpetual Calendar Ref. 3448

Sold Out

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New Arrivals Preview
 
Audemars Piguet Perpetual Calendar Minute Repeater Murat Pocket Watch (New Arrival)

Audemars Piguet Perpetual Calendar Minute Repeater Murat Pocket Watch (New Arrival)

Audemars Piguet Perpetual Calendar Minute Repeater Murat Pocket Watch (New Arrival)

$275,000 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
 
Audemars Piguet Royal Oak Dual Time Watch Ref. 25730 with Bright Yellow Dial

Audemars Piguet Royal Oak Dual Time Watch Ref. 25730 with Bright Yellow Dial

Audemars Piguet Royal Oak Dual Time Watch Ref. 25730 with Bright Yellow Dial

$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
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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