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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Watch Ref. 5140 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5140

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5140

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

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5970

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5970

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Audemars Piguet - Audemars Piguet Steel Automatic Watch - The Keystone Watches

Audemars Piguet Steel Automatic Watch

Audemars Piguet Steel Automatic Watch

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Patek Philippe - Patek Philippe Ellipse White Gold Retailed by Gubelin Ref. 3589 - The Keystone Watches

Patek Philippe Ellipse White Gold Retailed by Gubelin Ref. 3589

Patek Philippe Ellipse White Gold Retailed by Gubelin Ref. 3589

Sold Out

 
A. Lange & Sohne - A. Lange & Sohne Platinum Grand Lange 1 Lumen 117.035 - The Keystone Watches

A. Lange & Sohne Platinum Grand Lange 1 Lumen 117.035

A. Lange & Sohne Platinum Grand Lange 1 Lumen 117.035

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Patek Philippe Steel Aquanaut First Series Watch Ref. 5060

Patek Philippe Steel Aquanaut First Series Watch Ref. 5060

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Audemars Piguet - Audemars Piguet Steel Cushion Ref. 5369 (NEW ARRIVAL) - The Keystone Watches

Audemars Piguet Steel Cushion Ref. 5369 (NEW ARRIVAL)

Audemars Piguet Steel Cushion Ref. 5369 (NEW ARRIVAL)

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Rolex - Rolex Steel Maxi Dial Submariner Ref. 5513 with Original Warranty - The Keystone Watches

Rolex Steel Maxi Dial Submariner Ref. 5513 with Original Warranty

Rolex Steel Maxi Dial Submariner Ref. 5513 with Original Warranty

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A. Lange & Sohne White Gold 1815 Annual Calendar Watch Ref. 238.026

A. Lange & Sohne White Gold 1815 Annual Calendar Watch Ref. 238.026

Sold Out

 
Rolex - Rolex Yellow Gold Day-Date with Morelli Finish Ref. 1811 - The Keystone Watches

Rolex Yellow Gold Day-Date with Morelli Finish Ref. 1811

Rolex Yellow Gold Day-Date with Morelli Finish Ref. 1811

Sold Out

 
Audemars Piguet - Audemars Piguet Royal Oak Tourbillon Ref. 26521, Edition of 10 - The Keystone Watches

Audemars Piguet Royal Oak Tourbillon Ref. 26521, Edition of 10

Audemars Piguet Royal Oak Tourbillon Ref. 26521, Edition of 10

Sold Out

 
Patek Philippe - Patek Philippe Steel Calatrava Ref. 3509 - The Keystone Watches

Patek Philippe Steel Calatrava Ref. 3509

Patek Philippe Steel Calatrava Ref. 3509

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IWC - IWC Yellow Gold Da Vinci with Original Bark Finish - The Keystone Watches

IWC Yellow Gold Da Vinci with Original Bark Finish

IWC Yellow Gold Da Vinci with Original Bark Finish

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Patek Philippe - Patek Philippe Yellow Gold Square Watch Ref. 5 from 1920 - The Keystone Watches

Patek Philippe Yellow Gold Square Watch Ref. 5 from 1920

Patek Philippe Yellow Gold Square Watch Ref. 5 from 1920

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Piaget - Piaget Yellow Gold Lapis Beta 21 Watch Ref. 14101 - The Keystone Watches

Piaget Yellow Gold Lapis Beta 21 Watch Ref. 14101

Piaget Yellow Gold Lapis Beta 21 Watch Ref. 14101

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Rolex - Rolex Daytona Big Red Watch Ref. 6263 - The Keystone Watches

Rolex Daytona Big Red Watch Ref. 6263

Rolex Daytona Big Red Watch Ref. 6263

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Audemars Piguet - Audemars Piguet White Gold Vintage Watch - The Keystone Watches

Audemars Piguet White Gold Vintage Watch

Audemars Piguet White Gold Vintage Watch

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Audemars Piguet - Audemars Piguet White Gold Skeleton Pocket Watch - The Keystone Watches

Audemars Piguet White Gold Skeleton Pocket Watch

Audemars Piguet White Gold Skeleton Pocket Watch

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

Patek Philippe Platinum Perpetual Calendar Split Seconds Chronograph Ref. 5004

Patek Philippe Platinum Perpetual Calendar Split Seconds Chronograph Ref. 5004

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Audemars Piguet - Audemars Piguet White Gold Automatic Tonneau Watch Ref. 5279 - The Keystone Watches

Audemars Piguet White Gold Automatic Tonneau Watch Ref. 5279

Audemars Piguet White Gold Automatic Tonneau Watch Ref. 5279

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Rolex - Rolex Yellow Gold Cosmograph Daytona Zenith Watch Ref. 16528 from 1991 - The Keystone Watches

Rolex Yellow Gold Cosmograph Daytona Zenith Watch Ref. 16528 from 1991

Rolex Yellow Gold Cosmograph Daytona Zenith Watch Ref. 16528 from 1991

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Rolex - Rolex Yellow Gold Optical Bracelet Watch by George LEnfant - The Keystone Watches

Rolex Yellow Gold Optical Bracelet Watch by George LEnfant

Rolex Yellow Gold Optical Bracelet Watch by George LEnfant

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New Arrivals Preview
 
Cartier Tank Coussin Bamboo Ref. 78102 (New Arrival)

Cartier Tank Coussin Bamboo Ref. 78102 (New Arrival)

Cartier Tank Coussin Bamboo Ref. 78102 (New Arrival)

$125,000 USD
 
Cartier Tank Allongee Elongated, Circa 1940 (New Arrival)

Cartier Tank Allongee Elongated, Circa 1940 (New Arrival)

Cartier Tank Allongee Elongated, Circa 1940 (New Arrival)

$62,000 USD
 
Patek Philippe White Gold Rectangular Art Deco Watch (New Arrival)

Patek Philippe White Gold Rectangular Art Deco Watch (New Arrival)

Patek Philippe White Gold Rectangular Art Deco Watch (New Arrival)

$55,000 USD
 
Cartier Platinum Tank Watch Ref. 16111 (New Arrival)

Cartier Platinum Tank Watch Ref. 16111 (New Arrival)

Cartier Platinum Tank Watch Ref. 16111 (New Arrival)

$21,000 USD
 
Patek Philippe Yellow Gold Chronograph Watch Ref. 591, Incredible Original Condition (New Arrival)

Patek Philippe Yellow Gold Chronograph Watch Ref. 591, Incredible Original Condition (New Arrival)

Patek Philippe Yellow Gold Chronograph Watch Ref. 591, Incredible Original Condition (New Arrival)

$175,000 USD
 
Patek Philippe Yellow Gold Enamel Dial Calatrava Watch Ref. 2526 (New Arrival)

Patek Philippe Yellow Gold Enamel Dial Calatrava Watch Ref. 2526 (New Arrival)

Patek Philippe Yellow Gold Enamel Dial Calatrava Watch Ref. 2526 (New Arrival)

$70,000 USD
 
Piaget Yellow Gold Lapis Lazuli & Jade Cuff Watch (New Arrivals)

Piaget Yellow Gold Lapis Lazuli & Jade Cuff Watch (New Arrivals)

Piaget Yellow Gold Lapis Lazuli & Jade Cuff Watch (New Arrivals)

$48,000 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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