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Patek Philippe White Gold Calatrava Watch Ref. 3445 on Bracelet

Patek Philippe White Gold Calatrava Watch Ref. 3445 on Bracelet

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Patek Philippe - Patek Philippe Yellow Gold Calatrava Ref. 2545, Gifted by the Arab American Oil Company (ARAMCO) - The Keystone Watches

Patek Philippe Yellow Gold Calatrava Ref. 2545, Gifted by the Arab American Oil Company (ARAMCO)

Patek Philippe Yellow Gold Calatrava Ref. 2545, Gifted by the Arab American Oil Company (ARAMCO)

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Patek Philippe - Patek Philippe Yellow Gold Calatrava Ref. 2428 - The Keystone Watches

Patek Philippe Yellow Gold Calatrava Ref. 2428

Patek Philippe Yellow Gold Calatrava Ref. 2428

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Patek Philippe - Patek Philippe White Gold Square Watch Ref. 3404 - The Keystone Watches

Patek Philippe White Gold Square Watch Ref. 3404

Patek Philippe White Gold Square Watch Ref. 3404

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Patek Philippe - Patek Philippe Yellow Gold Perpetual Calendar Ref. 5039 - The Keystone Watches

Patek Philippe Yellow Gold Perpetual Calendar Ref. 5039

Patek Philippe Yellow Gold Perpetual Calendar Ref. 5039

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Patek Philippe - Patek Philippe Yellow Gold Nautilus Ref. 3800 Retailed by Gubelin - The Keystone Watches

Patek Philippe Yellow Gold Nautilus Ref. 3800 Retailed by Gubelin

Patek Philippe Yellow Gold Nautilus Ref. 3800 Retailed by Gubelin

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Patek Philippe - Patek Philippe Yellow Gold Nautilus Ref. 3800J - The Keystone Watches

Patek Philippe Yellow Gold Nautilus Ref. 3800J

Patek Philippe Yellow Gold Nautilus Ref. 3800J

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Patek Philippe - Patek Philippe Yellow Gold Vintage Watch Ref. 3858 - The Keystone Watches

Patek Philippe Yellow Gold Vintage Watch Ref. 3858

Patek Philippe Yellow Gold Vintage Watch Ref. 3858

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Patek Philippe Rose Gold Chronograph Ref. 1579

Patek Philippe Rose Gold Chronograph Ref. 1579

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Patek Philippe Yellow Gold Calatrava Ref. 534 with Silver Sector Dial

Patek Philippe Yellow Gold Calatrava Ref. 534 with Silver Sector Dial

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Patek Philippe - Patek Philippe Steel Aquanaut First Series Watch Ref. 5060 - The Keystone Watches

Patek Philippe Steel Aquanaut First Series Watch Ref. 5060

Patek Philippe Steel Aquanaut First Series Watch Ref. 5060

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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

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Patek Philippe Yellow Gold Calatrava Watch Ref. 3445, Retailed by Gubelin

Patek Philippe Yellow Gold Calatrava Watch Ref. 3445, Retailed by Gubelin

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Patek Philippe - Patek Philippe Steel Calatrava Breguet Numerals Ref. 96 - The Keystone Watches

Patek Philippe Steel Calatrava Breguet Numerals Ref. 96

Patek Philippe Steel Calatrava Breguet Numerals Ref. 96

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Patek Philippe - Patek Philippe White Gold Calatrava Watch Ref. 570 - The Keystone Watches

Patek Philippe White Gold Calatrava Watch Ref. 570

Patek Philippe White Gold Calatrava Watch Ref. 570

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Patek Philippe - Patek Philippe White Gold Calatrava Watch Ref. 3429 - The Keystone Watches

Patek Philippe White Gold Calatrava Watch Ref. 3429

Patek Philippe White Gold Calatrava Watch Ref. 3429

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Patek Philippe Steel Aquanaut First Series Watch Ref. 5060

Patek Philippe Steel Aquanaut First Series Watch Ref. 5060

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Patek Philippe - Patek Philippe Yellow Gold Square Watch Ref. 5 from 1920 - The Keystone Watches

Patek Philippe Yellow Gold Square Watch Ref. 5 from 1920

Patek Philippe Yellow Gold Square Watch Ref. 5 from 1920

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Patek Philippe White Gold Baguette Diamond Watch Ref. 4260

Patek Philippe White Gold Baguette Diamond Watch Ref. 4260

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 3970 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 3970

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 3970

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Patek Philippe Yellow Gold Nautilus Watch Ref. 3800

Patek Philippe Yellow Gold Nautilus Watch Ref. 3800

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

Patek Philippe Rose Gold Perpetual Calendar Watch Ref. 3940

Patek Philippe Rose Gold Perpetual Calendar Watch Ref. 3940

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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
 
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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