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

Patek Philippe Platinum Perpetual Split Seconds Chronograph Watch Ref. 5004

Patek Philippe Platinum Perpetual Split Seconds Chronograph Watch Ref. 5004

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Patek Philippe - Patek Philippe Aquanaut Automatic Watch Watch Ref. 5060, First Series Aquanaut - The Keystone Watches

Patek Philippe Aquanaut Automatic Watch Watch Ref. 5060, First Series Aquanaut

Patek Philippe Aquanaut Automatic Watch Watch Ref. 5060, First Series Aquanaut

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Patek Philippe - Patek Philippe White Gold Perpetual Chronograph Watch Ref. 5270 - The Keystone Watches

Patek Philippe White Gold Perpetual Chronograph Watch Ref. 5270

Patek Philippe White Gold Perpetual Chronograph Watch Ref. 5270

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Patek Philippe - Patek Philippe White Gold Perpetual Calendar Automatic Watch Ref. 5140 - The Keystone Watches

Patek Philippe White Gold Perpetual Calendar Automatic Watch Ref. 5140

Patek Philippe White Gold Perpetual Calendar Automatic Watch Ref. 5140

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Advanced Research Watch Ref. 5550 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Advanced Research Watch Ref. 5550

Patek Philippe Platinum Perpetual Calendar Advanced Research Watch Ref. 5550

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Patek Philippe - Patek Philippe Platinum Advanced Research Annual Calendar Watch Ref. 5450 - The Keystone Watches

Patek Philippe Platinum Advanced Research Annual Calendar Watch Ref. 5450

Patek Philippe Platinum Advanced Research Annual Calendar Watch Ref. 5450

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Patek Philippe - Patek Philippe Rose Gold Grand Complication Watch Ref. 5207, Unworn & Double Sealed - The Keystone Watches

Patek Philippe Rose Gold Grand Complication Watch Ref. 5207, Unworn & Double Sealed

Patek Philippe Rose Gold Grand Complication Watch Ref. 5207, Unworn & Double Sealed

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Patek Philippe - Patek Philippe Yellow Gold Diamond Watch Ref. 4288 with Original Paper - The Keystone Watches

Patek Philippe Yellow Gold Diamond Watch Ref. 4288 with Original Paper

Patek Philippe Yellow Gold Diamond Watch Ref. 4288 with Original Paper

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Patek Philippe - Patek Philippe Platinum Grand Complication Watch Ref. 5207, Unworn & Double Sealed - The Keystone Watches

Patek Philippe Platinum Grand Complication Watch Ref. 5207, Unworn & Double Sealed

Patek Philippe Platinum Grand Complication Watch Ref. 5207, Unworn & Double Sealed

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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

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Patek Philippe - Patek Philippe Yellow Gold Watch Ref. 2422, Retailed by Tiffany & Co. - The Keystone Watches

Patek Philippe Yellow Gold Watch Ref. 2422, Retailed by Tiffany & Co.

Patek Philippe Yellow Gold Watch Ref. 2422, Retailed by Tiffany & Co.

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Patek Philippe - Patek Philippe Aquanaut Watch Ref. 5065 with Original Box, Papers, & Rubber Strap - The Keystone Watches

Patek Philippe Aquanaut Watch Ref. 5065 with Original Box, Papers, & Rubber Strap

Patek Philippe Aquanaut Watch Ref. 5065 with Original Box, Papers, & Rubber Strap

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

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

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

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Patek Philippe - Patek Philippe Steel Pocket Watch - The Keystone Watches

Patek Philippe Steel Pocket Watch

Patek Philippe Steel Pocket Watch

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Patek Philippe - Patek Philippe Yellow Gold Nautilus Watch Ref. 3800 - The Keystone Watches

Patek Philippe Yellow Gold Nautilus Watch Ref. 3800

Patek Philippe Yellow Gold Nautilus Watch Ref. 3800

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Patek Philippe - Patek Philippe Rose Gold Aquanaut Watch Ref. 5164 - The Keystone Watches

Patek Philippe Rose Gold Aquanaut Watch Ref. 5164

Patek Philippe Rose Gold Aquanaut Watch Ref. 5164

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

Patek Philippe White Gold Nautilus Moonphase Watch Ref. 5712

Patek Philippe White Gold Nautilus Moonphase Watch Ref. 5712

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Patek Philippe - Patek Philippe Nautilis Watch, Ref. 3800 - The Keystone Watches

Patek Philippe Nautilis Watch, Ref. 3800

Patek Philippe Nautilis Watch, Ref. 3800

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Patek Philippe - Patek Philippe Platinum Minute Repeating Tourbillon Watch Ref. 5016 - The Keystone Watches

Patek Philippe Platinum Minute Repeating Tourbillon Watch Ref. 5016

Patek Philippe Platinum Minute Repeating Tourbillon Watch Ref. 5016

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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 Rose Gold Perpetual Calendar Chronograph Watch Ref. 5970 - The Keystone Watches

Patek Philippe Rose Gold Perpetual Calendar Chronograph Watch Ref. 5970

Patek Philippe Rose Gold Perpetual Calendar Chronograph Watch Ref. 5970

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

Patek Philippe Rose Gold Nautilus Moonphase Watch Ref. 5712

Patek Philippe Rose Gold Nautilus Moonphase Watch Ref. 5712

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New Arrivals Preview
 
Rolex Yellow Gold Queen Midas Watch Ref. 4314 with Lapis and Diamond Dial (New Arrival)

Rolex Yellow Gold Queen Midas Watch Ref. 4314 with Lapis and Diamond Dial (New Arrival)

Rolex Yellow Gold Queen Midas Watch Ref. 4314 with Lapis and Diamond Dial (New Arrival)

$38,000 USD
 
Patek Philippe White Gold Baguette Diamond Watch Ref. 3540 (New Arrival)

Patek Philippe White Gold Baguette Diamond Watch Ref. 3540 (New Arrival)

Patek Philippe White Gold Baguette Diamond Watch Ref. 3540 (New Arrival)

$30,000 USD
 
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)

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

$60,000 USD
 
Breguet Cushion Shaped Diver 200m Watch (New Arrival)

Breguet Cushion Shaped Diver 200m Watch (New Arrival)

Breguet Cushion Shaped Diver 200m Watch (New Arrival)

$58,000 USD
 
Audemars Piguet White Gold Rectangular Watch with Lapis Watch (New Arrival)

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
 
Cartier Yellow Gold Tank Normale Bracelet Watch  Ref. 78092 (New Arrival)

Cartier Yellow Gold Tank Normale Bracelet Watch Ref. 78092 (New Arrival)

Cartier Yellow Gold Tank Normale Bracelet Watch Ref. 78092 (New Arrival)

$36,000 USD
 
Cartier - Cartier Yellow Gold Tank Reverso (New Arrival) - The Keystone Watches

Cartier Yellow Gold Tank Reverso (New Arrival)

Cartier Yellow Gold Tank Reverso (New Arrival)

$34,500 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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