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Patek Philippe - Patek Philippe Steel Aquanaut Automatic Watch Ref. 5167 - The Keystone Watches

Patek Philippe Steel Aquanaut Automatic Watch Ref. 5167

Patek Philippe Steel Aquanaut Automatic Watch Ref. 5167

Sold Out

 
Audemars Piguet - Audemars Piguet Yellow Gold Royal Oak Moonphase Watch - The Keystone Watches

Audemars Piguet Yellow Gold Royal Oak Moonphase Watch

Audemars Piguet Yellow Gold Royal Oak Moonphase Watch

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Patek Philippe - Patek Philippe White Gold 10-Day Tourbillon Watch Ref. 5101 - The Keystone Watches

Patek Philippe White Gold 10-Day Tourbillon Watch Ref. 5101

Patek Philippe White Gold 10-Day Tourbillon Watch Ref. 5101

Sold Out

 
FP Journe - F.P. Journe Platinum Tourbillon Souverain Dead Seconds Watch - The Keystone Watches

F.P. Journe Platinum Tourbillon Souverain Dead Seconds Watch

F.P. Journe Platinum Tourbillon Souverain Dead Seconds Watch

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

Patek Philippe Steel Aquanaut Jumbo Watch Ref. 5065

Patek Philippe Steel Aquanaut Jumbo Watch Ref. 5065

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Patek Philippe - Patek Philippe Aquanaut Automatic Watch Ref. 5066 with Original Box and Papers - The Keystone Watches

Patek Philippe Aquanaut Automatic Watch Ref. 5066 with Original Box and Papers

Patek Philippe Aquanaut Automatic Watch Ref. 5066 with Original Box and Papers

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

Patek Philippe Yellow Gold Perpetual Calendar Chrono Watch Ref. 5020

Patek Philippe Yellow Gold Perpetual Calendar Chrono Watch Ref. 5020

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Patek Philippe - Patek Philippe Rose Gold Split Seconds Perpetual Calendar Chrono Ref. 5204 in Unworn Condition - The Keystone Watches

Patek Philippe Rose Gold Split Seconds Perpetual Calendar Chrono Ref. 5204 in Unworn Condition

Patek Philippe Rose Gold Split Seconds Perpetual Calendar Chrono Ref. 5204 in Unworn Condition

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Patek Philippe - Patek Philippe Yellow Gold Annual Calendar Watch Ref. 5146 in Like New Condition - The Keystone Watches

Patek Philippe Yellow Gold Annual Calendar Watch Ref. 5146 in Like New Condition

Patek Philippe Yellow Gold Annual Calendar Watch Ref. 5146 in Like New Condition

Sold Out

 
Patek Philippe - Patek Philippe Rose Gold Celestial Watch Ref. 6102 - The Keystone Watches

Patek Philippe Rose Gold Celestial Watch Ref. 6102

Patek Philippe Rose Gold Celestial Watch Ref. 6102

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Audemars Piguet - Audemars Piguet Royal Oak Tourbillon Extra-Thin Ref. 26510 - The Keystone Watches

Audemars Piguet Royal Oak Tourbillon Extra-Thin Ref. 26510

Audemars Piguet Royal Oak Tourbillon Extra-Thin Ref. 26510

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Audemars Piguet - Audemars Piguet Yellow Gold Royal Oak Diamond Watch - The Keystone Watches

Audemars Piguet Yellow Gold Royal Oak Diamond Watch

Audemars Piguet Yellow Gold Royal Oak Diamond Watch

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Audemars Piguet - Audemars Piguet Royal Oak Jumbo First Series Watch Ref. 15202 - The Keystone Watches

Audemars Piguet Royal Oak Jumbo First Series Watch Ref. 15202

Audemars Piguet Royal Oak Jumbo First Series Watch Ref. 15202

Sold Out

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

Patek Philippe Steel Aquanaut Jumbo Watch Ref. 5065

Patek Philippe Steel Aquanaut Jumbo Watch Ref. 5065

Sold Out

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

Patek Philippe Yellow Gold Aquanaut Jumbo Watch Ref. 5065

Patek Philippe Yellow Gold Aquanaut Jumbo Watch Ref. 5065

Sold Out

 
Cartier White Gold Tank Louis Skeleton Watch Ref. W5310012

Cartier White Gold Tank Louis Skeleton Watch Ref. W5310012

Cartier White Gold Tank Louis Skeleton Watch Ref. W5310012

Sold Out

 
Patek Philippe - Patek Philippe Rose Gold Nautilus Diamond Watch Ref. 5724, Retailed by Tiffany & Co. - The Keystone Watches

Patek Philippe Rose Gold Nautilus Diamond Watch Ref. 5724, Retailed by Tiffany & Co.

Patek Philippe Rose Gold Nautilus Diamond Watch Ref. 5724, Retailed by Tiffany & Co.

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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

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

Patek Philippe Steel Tonneau-Shaped Watch Ref. 3579

Patek Philippe Steel Tonneau-Shaped Watch Ref. 3579

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Patek Philippe - Patek Philippe White Gold Lapis Bracelet Watch Ref. 3578, with Original Hang Tag - The Keystone Watches

Patek Philippe White Gold Lapis Bracelet Watch Ref. 3578, with Original Hang Tag

Patek Philippe White Gold Lapis Bracelet Watch Ref. 3578, with Original Hang Tag

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Audemars Piguet - Audemars Piguet Steel Tonneau-Shaped Watch Ref. 5369 - The Keystone Watches

Audemars Piguet Steel Tonneau-Shaped Watch Ref. 5369

Audemars Piguet Steel Tonneau-Shaped Watch Ref. 5369

Sold Out

 
Audemars Piguet - Audemars Piguet Yellow Gold Royal Oak Jumbo Extra-Thin Watch Ref. 15202 - The Keystone Watches

Audemars Piguet Yellow Gold Royal Oak Jumbo Extra-Thin Watch Ref. 15202

Audemars Piguet Yellow Gold Royal Oak Jumbo Extra-Thin Watch Ref. 15202

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)

$150,000 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
 
Patek Philiipe White Gold Calatrava Watch Ref. 3919 (New Arrival)

Patek Philiipe White Gold Calatrava Watch Ref. 3919 (New Arrival)

Patek Philiipe White Gold Calatrava Watch Ref. 3919 (New Arrival)

$15,000 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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