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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

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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

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

Patek Philippe Yellow Gold Minute Repeater Perpetual Calendar Ref. 3974

Patek Philippe Yellow Gold Minute Repeater Perpetual Calendar Ref. 3974

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Patek Philippe - Patek Philippe Steel Aquanaut Ref 5065 - The Keystone Watches

Patek Philippe Steel Aquanaut Ref 5065

Patek Philippe Steel Aquanaut Ref 5065

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

Patek Philippe Aquanaut Automatic Watch Ref. 5060, First Series Aquanaut with Original Paper

Patek Philippe Aquanaut Automatic Watch Ref. 5060, First Series Aquanaut with Original Paper

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Patek Philippe - Patek Philippe Calatrava White Gold Ref. 570 with Tropical Dial - The Keystone Watches

Patek Philippe Calatrava White Gold Ref. 570 with Tropical Dial

Patek Philippe Calatrava White Gold Ref. 570 with Tropical Dial

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Patek Philippe - Patek Philippe Rose Gold Perpetual Calendar Chrono Watch Ref. 5020 - The Keystone Watches

Patek Philippe Rose Gold Perpetual Calendar Chrono Watch Ref. 5020

Patek Philippe Rose Gold Perpetual Calendar Chrono Watch Ref. 5020

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Patek Philippe - Patek Philippe White Gold Watch Ref 3733 with Black Onyx Dial - The Keystone Watches

Patek Philippe White Gold Watch Ref 3733 with Black Onyx Dial

Patek Philippe White Gold Watch Ref 3733 with Black Onyx Dial

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Patek Philippe - Patek Philippe White Gold Automatic Watch Ref. 3589 - The Keystone Watches

Patek Philippe White Gold Automatic Watch Ref. 3589

Patek Philippe White Gold Automatic Watch Ref. 3589

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Patek Philippe - Patek Philippe Nautilus, Ref. 3800 with Original Paper and Hangtag - The Keystone Watches

Patek Philippe Nautilus, Ref. 3800 with Original Paper and Hangtag

Patek Philippe Nautilus, Ref. 3800 with Original Paper and Hangtag

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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 Rectangular Platinum & Baguette Diamond Watch Ref. 5007 - The Keystone Watches

Patek Philippe Rectangular Platinum & Baguette Diamond Watch Ref. 5007

Patek Philippe Rectangular Platinum & Baguette Diamond Watch Ref. 5007

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Patek Philippe - Patek Philippe Yellow Gold Calatrava, Ref. 2526 Retailed by Serpico Y Laino - The Keystone Watches

Patek Philippe Yellow Gold Calatrava, Ref. 2526 Retailed by Serpico Y Laino

Patek Philippe Yellow Gold Calatrava, Ref. 2526 Retailed by Serpico Y Laino

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Patek Philippe - Patek Philippe Yellow Gold Ellipse Automatic Watch, Ref. 3589 - The Keystone Watches

Patek Philippe Yellow Gold Ellipse Automatic Watch, Ref. 3589

Patek Philippe Yellow Gold Ellipse Automatic Watch, Ref. 3589

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

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 3940

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 3940

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Calatrava Watch Ref. 2551 - The Keystone Watches

Patek Philippe Yellow Gold Calatrava Watch Ref. 2551

Patek Philippe Yellow Gold Calatrava Watch Ref. 2551

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Patek Philippe - Patek Philippe Yellow Gold Oversized Watch Ref. 2511, 1954 - The Keystone Watches

Patek Philippe Yellow Gold Oversized Watch Ref. 2511, 1954

Patek Philippe Yellow Gold Oversized Watch Ref. 2511, 1954

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

Patek Philippe Yellow Gold Jumbo Nautilus Watch Ref. 3700 with Archive Paper

Patek Philippe Yellow Gold Jumbo Nautilus Watch Ref. 3700 with Archive Paper

Sold Out

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

Patek Philippe Perpetual Calendar Automatic Watch Ref. 3940

Patek Philippe Perpetual Calendar Automatic Watch Ref. 3940

Sold Out

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New Arrivals Preview
 
Cartier Platinum Tank A Guichet Ref. WGTA0236, 2025 Edition (New Arrival)

Cartier Platinum Tank A Guichet Ref. WGTA0236, 2025 Edition (New Arrival)

Cartier Platinum Tank A Guichet Ref. WGTA0236, 2025 Edition (New Arrival)

"Price upon request"
 
Audemars Piguet Yellow Gold Coin Watch (New Arrival)

Audemars Piguet Yellow Gold Coin Watch (New Arrival)

Audemars Piguet Yellow Gold Coin Watch (New Arrival)

$9,500 USD
 
Patek Philippe White Gold Calatrava Watch Ref. 4189 (New Arrival)

Patek Philippe White Gold Calatrava Watch Ref. 4189 (New Arrival)

Patek Philippe White Gold Calatrava Watch Ref. 4189 (New Arrival)

$9,800 USD
 
Rolex Yellow Gold Day-Date Watch Ref. 1803 with Claw Dial (New Arrival)

Rolex Yellow Gold Day-Date Watch Ref. 1803 with Claw Dial (New Arrival)

Rolex Yellow Gold Day-Date Watch Ref. 1803 with Claw Dial (New Arrival)

$18,750 USD
 
Boucheron - Boucheron Yellow Gold Invisible Set Sapphire Watch (New Arrival) - The Keystone Watches

Boucheron Yellow Gold Invisible Set Sapphire Watch (New Arrival)

Boucheron Yellow Gold Invisible Set Sapphire Watch (New Arrival)

$9,500 USD
 
Rolex - Rolex Yellow Gold Cellini Watch Ref. 4014/8 with Orange Dial (New Arrival) - The Keystone Watches

Rolex Yellow Gold Cellini Watch Ref. 4014/8 with Orange Dial (New Arrival)

Rolex Yellow Gold Cellini Watch Ref. 4014/8 with Orange Dial (New Arrival)

$7,500 USD
 
Rolex Steel Submariner Ref. 5513 with Pumkin Lume (New Arrival)

Rolex Steel Submariner Ref. 5513 with Pumkin Lume (New Arrival)

Rolex Steel Submariner Ref. 5513 with Pumkin Lume (New Arrival)

$15,500 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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