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Patek Philippe - Patek Philippe Platinum Minute Repeater Ref. 3979 - The Keystone Watches

Patek Philippe Platinum Minute Repeater Ref. 3979

Patek Philippe Platinum Minute Repeater Ref. 3979

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Minute Repeater Ref. 3979 - The Keystone Watches

Patek Philippe Yellow Gold Minute Repeater Ref. 3979

Patek Philippe Yellow Gold Minute Repeater Ref. 3979

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

Patek Philippe Aquanaut Automatic Watch Ref. 5060, First Series Aquanaut

Patek Philippe Aquanaut Automatic Watch Ref. 5060, First Series Aquanaut

Sold Out

 
Patek Philippe - Patek Philippe Steel Tonneau Watch Ref. 3579 - The Keystone Watches

Patek Philippe Steel Tonneau Watch Ref. 3579

Patek Philippe Steel Tonneau Watch Ref. 3579

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Patek Philippe - Patek Philippe Perpetual Calendar Yellow Gold Ref. 3970 - The Keystone Watches

Patek Philippe Perpetual Calendar Yellow Gold Ref. 3970

Patek Philippe Perpetual Calendar Yellow Gold Ref. 3970

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Patek Philippe - Patek Philippe Platinum Perpetual Ref. 3940 with Box and Papers - The Keystone Watches

Patek Philippe Platinum Perpetual Ref. 3940 with Box and Papers

Patek Philippe Platinum Perpetual Ref. 3940 with Box and Papers

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Split Seconds Chrono Ref. 5004 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Split Seconds Chrono Ref. 5004

Patek Philippe Platinum Perpetual Calendar Split Seconds Chrono Ref. 5004

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Patek Philippe - Patek Philippe Yellow Gold Nautilus Jumbo Watch Ref. 3700 - The Keystone Watches

Patek Philippe Yellow Gold Nautilus Jumbo Watch Ref. 3700

Patek Philippe Yellow Gold Nautilus Jumbo Watch Ref. 3700

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Patek Philippe - Patek Philippe Yellow Gold Bracelet Watch Ref. 4241 with Iraqi Coat of Arms - The Keystone Watches

Patek Philippe Yellow Gold Bracelet Watch Ref. 4241 with Iraqi Coat of Arms

Patek Philippe Yellow Gold Bracelet Watch Ref. 4241 with Iraqi Coat of Arms

Sold Out

 
Patek Philippe - Patek Philippe Perpetual Calendar Watch Ref. 3450 - The Keystone Watches

Patek Philippe Perpetual Calendar Watch Ref. 3450

Patek Philippe Perpetual Calendar Watch Ref. 3450

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Patek Philippe - Patek Philippe Yellow Gold Perpetual Calendar Minute Repeater Watch Ref. 3974 - The Keystone Watches

Patek Philippe Yellow Gold Perpetual Calendar Minute Repeater Watch Ref. 3974

Patek Philippe Yellow Gold Perpetual Calendar Minute Repeater Watch Ref. 3974

Sold Out

 
Patek Philippe - Patek Philippe Aquanaut Jumbo Watch Ref. 5065 - The Keystone Watches

Patek Philippe Aquanaut Jumbo Watch Ref. 5065

Patek Philippe Aquanaut Jumbo Watch Ref. 5065

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Patek Philippe - Patek Philippe Yellow Gold Perpetual Calendar Split Seconds Chrono Watch Ref. 5004 - The Keystone Watches

Patek Philippe Yellow Gold Perpetual Calendar Split Seconds Chrono Watch Ref. 5004

Patek Philippe Yellow Gold Perpetual Calendar Split Seconds Chrono Watch Ref. 5004

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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 - Patek Philippe Tasti Tondi Chronograph Ref. 1463 - The Keystone Watches

Patek Philippe Tasti Tondi Chronograph Ref. 1463

Patek Philippe Tasti Tondi Chronograph Ref. 1463

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

Patek Philippe Platinum Nautilus Watch Ref. 3800 with Original Warranty

Patek Philippe Platinum Nautilus Watch Ref. 3800 with Original Warranty

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Patek Philippe - Patek Philippe Steel Calatrava Steel Ref. 565 - The Keystone Watches

Patek Philippe Steel Calatrava Steel Ref. 565

Patek Philippe Steel Calatrava Steel Ref. 565

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Patek Philippe - Patek Philippe Yellow Gold Beta 21 Watch Ref. 3587 - The Keystone Watches

Patek Philippe Yellow Gold Beta 21 Watch Ref. 3587

Patek Philippe Yellow Gold Beta 21 Watch Ref. 3587

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

Patek Philippe Yellow Gold Nautilus Watch Ref. 3800

Patek Philippe Yellow Gold Nautilus Watch Ref. 3800

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Patek Philippe - Patek Philippe Yellow Gold Calatrava Ref. 2508 - The Keystone Watches

Patek Philippe Yellow Gold Calatrava Ref. 2508

Patek Philippe Yellow Gold Calatrava Ref. 2508

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Patek Philippe - Patek Philippe Yellow Gold Perpetual Calendar Ref. 3945 - The Keystone Watches

Patek Philippe Yellow Gold Perpetual Calendar Ref. 3945

Patek Philippe Yellow Gold Perpetual Calendar Ref. 3945

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Patek Philippe - Patek Philippe Nautilus Yellow Gold diamond dial ref. 3800/1 - The Keystone Watches

Patek Philippe Nautilus Yellow Gold diamond dial ref. 3800/1

Patek Philippe Nautilus Yellow Gold diamond dial ref. 3800/1

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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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