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

Patek Philippe Yellow Gold First Series Perpetual Calendar Watch Ref. 3940

Patek Philippe Yellow Gold First Series Perpetual Calendar Watch Ref. 3940

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Chrono Watch Ref. 5970 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Chrono Watch Ref. 5970

Patek Philippe Platinum Perpetual Calendar Chrono Watch Ref. 5970

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Patek Philippe - Patek Philippe Aquanaut Automatic Watch Ref. 5066 - The Keystone Watches

Patek Philippe Aquanaut Automatic Watch Ref. 5066

Patek Philippe Aquanaut Automatic Watch Ref. 5066

Sold Out

 
Patek Philippe - Patek Philippe Nautilus Moonphase Watch Ref. 5712 - The Keystone Watches

Patek Philippe Nautilus Moonphase Watch Ref. 5712

Patek Philippe Nautilus Moonphase Watch Ref. 5712

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Patek Philippe - Patek Philippe Platinum Annual Calender Chronograph Watch Ref. 5905 - The Keystone Watches

Patek Philippe Platinum Annual Calender Chronograph Watch Ref. 5905

Patek Philippe Platinum Annual Calender Chronograph Watch Ref. 5905

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Patek Philippe - Patek Philippe Nautilus Moonphase Watch Ref. 5712 - The Keystone Watches

Patek Philippe Nautilus Moonphase Watch Ref. 5712

Patek Philippe Nautilus Moonphase Watch Ref. 5712

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Patek Philippe - Patek Philippe Stainless Steel Automatic Bracelet Watch Ref. 3580 - The Keystone Watches

Patek Philippe Stainless Steel Automatic Bracelet Watch Ref. 3580

Patek Philippe Stainless Steel Automatic Bracelet Watch Ref. 3580

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

Patek Philippe Yellow Gold Perpetual Calendar Chronograph Ref. 3970

Patek Philippe Yellow Gold Perpetual Calendar Chronograph Ref. 3970

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Patek Philippe - Patek Philippe White Gold Celestial Ref. 5102 - The Keystone Watches

Patek Philippe White Gold Celestial Ref. 5102

Patek Philippe White Gold Celestial Ref. 5102

Sold Out

 
Patek Philippe - Patek Philippe Rose Gold Calatrava Watch Ref. 5119 - The Keystone Watches

Patek Philippe Rose Gold Calatrava Watch Ref. 5119

Patek Philippe Rose Gold Calatrava Watch Ref. 5119

Sold Out

 
Patek Philippe - Patek Philippe Stainless Steel Nautilus Watch Ref. 5711/1A - The Keystone Watches

Patek Philippe Stainless Steel Nautilus Watch Ref. 5711/1A

Patek Philippe Stainless Steel Nautilus Watch Ref. 5711/1A

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

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

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

Sold Out

 
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 White Gold Calatrava Automatic Watch Ref. 6000 - The Keystone Watches

Patek Philippe White Gold Calatrava Automatic Watch Ref. 6000

Patek Philippe White Gold Calatrava Automatic Watch Ref. 6000

Sold Out

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

Patek Philippe Platinum Perpetual Calendar Chrono Watch Ref. 3970

Patek Philippe Platinum Perpetual Calendar Chrono Watch Ref. 3970

Sold Out

 
Patek Philippe - Patek Philippe Platinum Annual Calendar Chrono Watch Ref. 5960 - The Keystone Watches

Patek Philippe Platinum Annual Calendar Chrono Watch Ref. 5960

Patek Philippe Platinum Annual Calendar Chrono Watch Ref. 5960

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Patek Philippe - Patek Philippe Rose Gold Annual Calendar Chrono Watch Ref. 5960 - The Keystone Watches

Patek Philippe Rose Gold Annual Calendar Chrono Watch Ref. 5960

Patek Philippe Rose Gold Annual Calendar Chrono Watch Ref. 5960

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Patek Philippe - Patek Philippe Yellow Gold Annual Calendar Watch Ref. 5035 - The Keystone Watches

Patek Philippe Yellow Gold Annual Calendar Watch Ref. 5035

Patek Philippe Yellow Gold Annual Calendar Watch Ref. 5035

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Patek Philippe - Patek Philippe Platinum & Rose Gold Celestial Watch Ref. 5102 Retailed by Tiffany & Co. - The Keystone Watches

Patek Philippe Platinum & Rose Gold Celestial Watch Ref. 5102 Retailed by Tiffany & Co.

Patek Philippe Platinum & Rose Gold Celestial Watch Ref. 5102 Retailed by Tiffany & Co.

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Patek Philippe - Patek Philippe Aquanaut Tiffany & Co Watch Ref. 5167 - The Keystone Watches

Patek Philippe Aquanaut Tiffany & Co Watch Ref. 5167

Patek Philippe Aquanaut Tiffany & Co Watch Ref. 5167

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Patek Philippe - Patek Philippe Platinum Chronograph Watch Ref. 5070 - The Keystone Watches

Patek Philippe Platinum Chronograph Watch Ref. 5070

Patek Philippe Platinum Chronograph Watch Ref. 5070

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Patek Philippe - Patek Philippe Rose Gold Nautilus Tiffany & Co. Watch Ref. 5711 - The Keystone Watches

Patek Philippe Rose Gold Nautilus Tiffany & Co. Watch Ref. 5711

Patek Philippe Rose Gold Nautilus Tiffany & Co. Watch Ref. 5711

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Patek Philippe - Patek Philippe Stainless Steel Pilot Watch Ref. 5522 Retailed by Tiffany & Co. - The Keystone Watches

Patek Philippe Stainless Steel Pilot Watch Ref. 5522 Retailed by Tiffany & Co.

Patek Philippe Stainless Steel Pilot Watch Ref. 5522 Retailed by Tiffany & Co.

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Patek Philippe - Patek Philippe White Gold Nautilus Watch Ref. 5719 - The Keystone Watches

Patek Philippe White Gold Nautilus Watch Ref. 5719

Patek Philippe White Gold Nautilus Watch Ref. 5719

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Patek Philippe - Patek Philippe White Gold Nautilus Baguette Watch Ref. 5724 - The Keystone Watches

Patek Philippe White Gold Nautilus Baguette Watch Ref. 5724

Patek Philippe White Gold Nautilus Baguette Watch Ref. 5724

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Patek Philippe - Patek Philippe Steel Nautilus Watch Ref. 5711 - The Keystone Watches

Patek Philippe Steel Nautilus Watch Ref. 5711

Patek Philippe Steel Nautilus Watch Ref. 5711

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Patek Philippe - Patek Philippe Platinum Rare Handcrafts Enamel Watch Ref. 5088 - The Keystone Watches

Patek Philippe Platinum Rare Handcrafts Enamel Watch Ref. 5088

Patek Philippe Platinum Rare Handcrafts Enamel Watch Ref. 5088

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Patek Philippe - Patek Philippe Yellow Gold Skeletonized Enamel Watch Ref. 3885 - The Keystone Watches

Patek Philippe Yellow Gold Skeletonized Enamel Watch Ref. 3885

Patek Philippe Yellow Gold Skeletonized Enamel Watch Ref. 3885

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Patek Philippe - Patek Philippe Aquanaut Tiffany & Co Watch Ref. 5167 - The Keystone Watches

Patek Philippe Aquanaut Tiffany & Co Watch Ref. 5167

Patek Philippe Aquanaut Tiffany & Co Watch Ref. 5167

Sold Out

 
Patek Philippe - Patek Philippe Nautilus Chronograph Watch Ref. 5980 - The Keystone Watches

Patek Philippe Nautilus Chronograph Watch Ref. 5980

Patek Philippe Nautilus Chronograph Watch Ref. 5980

Sold Out

 
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 Yellow Gold Calatrava Watch Ref. 5196 - The Keystone Watches

Patek Philippe Yellow Gold Calatrava Watch Ref. 5196

Patek Philippe Yellow Gold Calatrava Watch Ref. 5196

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Patek Philippe - Patek Philippe Calatrava White Gold on Strap Ref. 3893 - The Keystone Watches

Patek Philippe Calatrava White Gold on Strap Ref. 3893

Patek Philippe Calatrava White Gold on Strap Ref. 3893

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Patek Philippe - Patek Philippe Platinum Cloisonne Dial Watch Ref. 5077 - The Keystone Watches

Patek Philippe Platinum Cloisonne Dial Watch Ref. 5077

Patek Philippe Platinum Cloisonne Dial Watch Ref. 5077

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

Patek Philippe Stainless Steel Nautilus Automatic Watch Ref. 3800

Patek Philippe Stainless Steel Nautilus Automatic Watch Ref. 3800

Sold Out

 
Patek Philippe - Patek Philippe White Gold Pilot Watch Ref. 5524 - The Keystone Watches

Patek Philippe White Gold Pilot Watch Ref. 5524

Patek Philippe White Gold Pilot Watch Ref. 5524

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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