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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Split Seconds Watch Ref. 5204 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Split Seconds Watch Ref. 5204

Patek Philippe Platinum Perpetual Calendar Split Seconds Watch Ref. 5204

Sold Out

 
Patek Philippe - Patek Philippe Platinum Perpetual Calendar Minute Repeater Chronograph Ref. 5208 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Minute Repeater Chronograph Ref. 5208

Patek Philippe Platinum Perpetual Calendar Minute Repeater Chronograph Ref. 5208

Sold Out

 
Patek Philippe - Patek Philippe Platinum Calatrava Watch Ref. 3998 - The Keystone Watches

Patek Philippe Platinum Calatrava Watch Ref. 3998

Patek Philippe Platinum Calatrava Watch Ref. 3998

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Patek Philippe Unique Platinum Monopusher Split Seconds Chronograph Ref. 5959

Patek Philippe Unique Platinum Monopusher Split Seconds Chronograph Ref. 5959

Patek Philippe Unique Platinum Monopusher Split Seconds Chronograph Ref. 5959

"Price upon request"
 

Patek Philippe Platinum 10 Day Tourbillon Ref. 5101P

Patek Philippe Platinum 10 Day Tourbillon Ref. 5101P

Sold Out

 
Patek Philippe - Patek Philippe Platinum Grand Complication Minute Repeater Ref. 5316 - The Keystone Watches

Patek Philippe Platinum Grand Complication Minute Repeater Ref. 5316

Patek Philippe Platinum Grand Complication Minute Repeater Ref. 5316

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Patek Philippe Platinum Split Seconds Monopusher Chronograph 5959

Patek Philippe Platinum Split Seconds Monopusher Chronograph 5959

Patek Philippe Platinum Split Seconds Monopusher Chronograph 5959

"Price upon request"
 
Patek Philippe - Patek Philippe Platinum Perpetual Calendar Watch Ref. 5236 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5236

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5236

Sold Out

 
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

Sold Out

 
Patek Philippe - Patek Philippe Platinum Minute Repeater Watch Ref. 5078 - The Keystone Watches

Patek Philippe Platinum Minute Repeater Watch Ref. 5078

Patek Philippe Platinum Minute Repeater Watch Ref. 5078

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Patek Philippe - Patek Philippe Platinum Minute Repeating Tourbillon Watch Ref. 3939 - The Keystone Watches

Patek Philippe Platinum Minute Repeating Tourbillon Watch Ref. 3939

Patek Philippe Platinum Minute Repeating Tourbillon Watch Ref. 3939

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

Patek Philippe Platinum Chronograph Watch Ref. 5070, Single Sealed

Patek Philippe Platinum Chronograph Watch Ref. 5070, Single Sealed

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Patek Philippe Platinum Grand Complication Perpetual Calendar Minute Repeater Watch Ref. 5016

Patek Philippe Platinum Grand Complication Perpetual Calendar Minute Repeater Watch Ref. 5016

Sold Out

 
Patek Philippe - Patek Philippe Platinum Annual Calendar Chronograph Ref. 5960P - The Keystone Watches

Patek Philippe Platinum Annual Calendar Chronograph Ref. 5960P

Patek Philippe Platinum Annual Calendar Chronograph Ref. 5960P

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

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5970

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5970

Sold Out

 
Patek Philippe - Patek Philippe Platinum Grand Complication Ref. 5016 - The Keystone Watches

Patek Philippe Platinum Grand Complication Ref. 5016

Patek Philippe Platinum Grand Complication Ref. 5016

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

Patek Philippe Platinum Perpetual Calendar Ref 5140

Patek Philippe Platinum Perpetual Calendar Ref 5140

Sold Out

 
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

Sold Out

 
Patek Philippe - Patek Philippe Platinum World Time Watch Ref. 5131 - The Keystone Watches

Patek Philippe Platinum World Time Watch Ref. 5131

Patek Philippe Platinum World Time Watch Ref. 5131

Sold Out

 
Patek Philippe - Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5374 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5374

Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5374

Sold Out

 
Patek Philippe - Patek Philippe Platinum Perpetual Calendar Tourbillon Watch Ref. 5016 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Tourbillon Watch Ref. 5016

Patek Philippe Platinum Perpetual Calendar Tourbillon Watch Ref. 5016

Sold Out

 
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

Sold Out

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New Arrivals Preview
 
Patek Philippe Yellow Gold Tonneau Ref. 2469 (New Arrival)

Patek Philippe Yellow Gold Tonneau Ref. 2469 (New Arrival)

Patek Philippe Yellow Gold Tonneau Ref. 2469 (New Arrival)

$19,800 USD
 
Tissot Steel Chronograph with Black Gilt Dial (New Arrival)

Tissot Steel Chronograph with Black Gilt Dial (New Arrival)

Tissot Steel Chronograph with Black Gilt Dial (New Arrival)

$16,000 USD
 
Breguet Steel Chronograph Watch, 1940s (New Arrival)

Breguet Steel Chronograph Watch, 1940s (New Arrival)

Breguet Steel Chronograph Watch, 1940s (New Arrival)

$75,000 USD
 
Cartier Yellow Gold Bracelet Watch (New Arrival)

Cartier Yellow Gold Bracelet Watch (New Arrival)

Cartier Yellow Gold Bracelet Watch (New Arrival)

$30,000 USD
 
Patek Philippe Yellow Gold Calatrava Breguet Numerals Ref. 2533 (New Arrival)

Patek Philippe Yellow Gold Calatrava Breguet Numerals Ref. 2533 (New Arrival)

Patek Philippe Yellow Gold Calatrava Breguet Numerals Ref. 2533 (New Arrival)

$105,000 USD
 
Vacheron Constantin - Vacheron Constantin Yellow Gold Chronograph Watch Ref. 4178 with Important Provenance (New Arrival) - The Keystone Watches

Vacheron Constantin Yellow Gold Chronograph Watch Ref. 4178 with Important Provenance (New Arrival)

Vacheron Constantin Yellow Gold Chronograph Watch Ref. 4178 with Important Provenance (New Arrival)

$60,000 USD
 
Audemars Piguet - Audemars Piguet White Gold Rectangular Watch with Lapis Watch (New Arrival) - The Keystone Watches

Audemars Piguet White Gold Rectangular Watch with Lapis Watch (New Arrival)

Audemars Piguet White Gold Rectangular Watch with Lapis Watch (New Arrival)

$18,000 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.

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