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Patek Philippe Steel Nautilus Ref. 3712

Patek Philippe Steel Nautilus Ref. 3712

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Franck Muller White Gold Double Mystery with Black Diamonds and Sapphires

Franck Muller White Gold Double Mystery with Black Diamonds and Sapphires

Franck Muller White Gold Double Mystery with Black Diamonds and Sapphires

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Patek Philippe Yellow Gold Cufflinks with the Khanjar Emblem of Oman

Patek Philippe Yellow Gold Cufflinks with the Khanjar Emblem of Oman

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Patek Philippe White Gold Calatrava Ref. 3563 with Blue Marker Sigma Dial

Patek Philippe White Gold Calatrava Ref. 3563 with Blue Marker Sigma Dial

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Patek Philippe Yellow Gold Calatrava Ref. 2428

Patek Philippe Yellow Gold Calatrava Ref. 2428

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

Patek Philippe Rose Gold Perpetual Calendar Chronograph Ref. 3970

Patek Philippe Rose Gold Perpetual Calendar Chronograph Ref. 3970

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Audemars Piguet Yellow Gold Skeleton Watch, 1950s

Audemars Piguet Yellow Gold Skeleton Watch, 1950s

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Audemars Piguet White Gold Automatic Watch Ref. 5279

Audemars Piguet White Gold Automatic Watch Ref. 5279

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Patek Philippe Yellow Gold Pocket Watch Ref. 763

Patek Philippe Yellow Gold Pocket Watch Ref. 763

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Vintage Vacheron Constantin White Gold Diamond Watch

Vintage Vacheron Constantin White Gold Diamond Watch

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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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Rolex Yellow Gold Date Ref. 1503 with Original Warranty (NEW ARRIVAL)

Rolex Yellow Gold Date Ref. 1503 with Original Warranty (NEW ARRIVAL)

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Patek Philippe Rose Gold Calatrava Ref. 1594 retailed by Freccero

Patek Philippe Rose Gold Calatrava Ref. 1594 retailed by Freccero

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Cartier Yellow Gold Santos Round with Pave Diamond Dial

Cartier Yellow Gold Santos Round with Pave Diamond Dial

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Patek Philippe White Gold Beta 21 Watch Ref. 3597

Patek Philippe White Gold Beta 21 Watch Ref. 3597

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Vacheron Constantin - Vacheron Constantin Yellow Gold Watch Ref. 92238 - The Keystone Watches

Vacheron Constantin Yellow Gold Watch Ref. 92238

Vacheron Constantin Yellow Gold Watch Ref. 92238

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Audemars Piguet White Gold and Baguette Diamond Watch

Audemars Piguet White Gold and Baguette Diamond Watch

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Audemars Piguet Platinum Jump Hour Minute Repeater Ref. 26151

Audemars Piguet Platinum Jump Hour Minute Repeater Ref. 26151

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Audemars Piguet Skeletonized Royal Oak Necklace Pocket Watch

Audemars Piguet Skeletonized Royal Oak Necklace Pocket Watch

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Patek Philippe - Patek Philippe White Gold Ultra-Thin Ref. 3588 with Rare Breguet Dial - The Keystone Watches

Patek Philippe White Gold Ultra-Thin Ref. 3588 with Rare Breguet Dial

Patek Philippe White Gold Ultra-Thin Ref. 3588 with Rare Breguet Dial

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Chopard Yellow Gold Bracelet Scallop Watch Ref. 4029

Chopard Yellow Gold Bracelet Scallop Watch Ref. 4029

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Audemars Piguet Steel Tonneau Watch Ref. 5369 with Hobnail Dial

Audemars Piguet Steel Tonneau Watch Ref. 5369 with Hobnail Dial

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New Arrivals Preview
 
Rolex Yellow Gold Precision Buckle Bracelet Watch (New Arrival)

Rolex Yellow Gold Precision Buckle Bracelet Watch (New Arrival)

Rolex Yellow Gold Precision Buckle Bracelet Watch (New Arrival)

$19,500 USD
 
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
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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