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Patek Philippe - Patek Philippe White Gold Calatrava Ref. 3588 - The Keystone Watches

Patek Philippe White Gold Calatrava Ref. 3588

Patek Philippe White Gold Calatrava Ref. 3588

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

Sold Out

 
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 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

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 Yellow Gold Perpetual Calendar Chronograph Watch Ref. 3970 - The Keystone Watches

Patek Philippe Yellow Gold Perpetual Calendar Chronograph Watch Ref. 3970

Patek Philippe Yellow Gold Perpetual Calendar Chronograph Watch Ref. 3970

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Calatrava Ref. 3445 - The Keystone Watches

Patek Philippe Yellow Gold Calatrava Ref. 3445

Patek Philippe Yellow Gold Calatrava Ref. 3445

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Perpetual Calendar Chronograph Fourth Series Ref. 2499 - The Keystone Watches

Patek Philippe Yellow Gold Perpetual Calendar Chronograph Fourth Series Ref. 2499

Patek Philippe Yellow Gold Perpetual Calendar Chronograph Fourth Series Ref. 2499

Sold Out

 
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

Sold Out

 
Patek Philippe - Patek Philippe White Gold with blue dial Ref. 3445/6 - The Keystone Watches

Patek Philippe White Gold with blue dial Ref. 3445/6

Patek Philippe White Gold with blue dial Ref. 3445/6

Sold Out

 
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

Sold Out

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

Patek Philippe Yellow Gold Perpetual Calendar Chronograph Watch Ref. 3970

Patek Philippe Yellow Gold Perpetual Calendar Chronograph Watch Ref. 3970

Sold Out

 
Patek Philippe - Patek Philippe Platinum Calatrava Watch Ref. 5107 - The Keystone Watches

Patek Philippe Platinum Calatrava Watch Ref. 5107

Patek Philippe Platinum Calatrava Watch Ref. 5107

Sold Out

 
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

Sold Out

 
Patek Philippe - Patek Philippe Rose Gold Perpetual Calendar Watch Ref. 5970 - The Keystone Watches

Patek Philippe Rose Gold Perpetual Calendar Watch Ref. 5970

Patek Philippe Rose Gold Perpetual Calendar Watch Ref. 5970

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Bracelet Watch Ref. 3588 - The Keystone Watches

Patek Philippe Yellow Gold Bracelet Watch Ref. 3588

Patek Philippe Yellow Gold Bracelet Watch Ref. 3588

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Patek Philippe - Patek Philippe White Gold Nautilus Ref. 3800 in Top Condition - The Keystone Watches

Patek Philippe White Gold Nautilus Ref. 3800 in Top Condition

Patek Philippe White Gold Nautilus Ref. 3800 in Top Condition

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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 White Gold Perpetual Calendar Watch Ref. 5320 retailed by Tiffany & Co. - The Keystone Watches

Patek Philippe White Gold Perpetual Calendar Watch Ref. 5320 retailed by Tiffany & Co.

Patek Philippe White Gold Perpetual Calendar Watch Ref. 5320 retailed by Tiffany & Co.

Sold Out

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

Patek Philippe Steel Nautilus Watch Ref. 3800

Patek Philippe Steel Nautilus Watch Ref. 3800

Sold Out

 
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

Sold Out

 
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 White Gold World Time Watch Ref. 5110 - The Keystone Watches

Patek Philippe White Gold World Time Watch Ref. 5110

Patek Philippe White Gold World Time Watch Ref. 5110

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Patek Philippe - Patek Philippe Aquanaut Jumbo Watch Ref. 5065 with Original Box and Paper - The Keystone Watches

Patek Philippe Aquanaut Jumbo Watch Ref. 5065 with Original Box and Paper

Patek Philippe Aquanaut Jumbo Watch Ref. 5065 with Original Box and Paper

Sold Out

 
Patek Philippe - Patek Philippe Platinum Perpetual Calendar Ref. 3940P with Original Warranty Paper - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Ref. 3940P with Original Warranty Paper

Patek Philippe Platinum Perpetual Calendar Ref. 3940P with Original Warranty Paper

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Patek Philippe - Patek Philippe Platinum Annual Calendar Chronograph Ref. 5961P - The Keystone Watches

Patek Philippe Platinum Annual Calendar Chronograph Ref. 5961P

Patek Philippe Platinum Annual Calendar Chronograph Ref. 5961P

Sold Out

 
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

Sold Out

 
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

Sold Out

 
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

Sold Out

 
Patek Philippe - Patek Philippe Aquanaut Travel Time Watch Ref. 5164 - The Keystone Watches

Patek Philippe Aquanaut Travel Time Watch Ref. 5164

Patek Philippe Aquanaut Travel Time Watch Ref. 5164

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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

Sold Out

 
Patek Philippe - Patek Philippe Platinum World Time Watch Ref. 5110 - The Keystone Watches

Patek Philippe Platinum World Time Watch Ref. 5110

Patek Philippe Platinum World Time Watch Ref. 5110

Sold Out

 
Patek Philippe - Patek Philippe Steel Nautilus Ref. 3800 with White Dial - The Keystone Watches

Patek Philippe Steel Nautilus Ref. 3800 with White Dial

Patek Philippe Steel Nautilus Ref. 3800 with White Dial

Sold Out

 
Patek Philippe - Patek Philippe World Time Yellow Gold Ref. 5110J - The Keystone Watches

Patek Philippe World Time Yellow Gold Ref. 5110J

Patek Philippe World Time Yellow Gold Ref. 5110J

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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