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Patek Philippe - Patek Philippe White Gold Diamond Watch Ref. 3588 - The Keystone Watches

Patek Philippe White Gold Diamond Watch Ref. 3588

Patek Philippe White Gold Diamond Watch Ref. 3588

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Patek Philippe - Patek Philippe White Gold Automatic Diamond Watch Ref. 3563 - The Keystone Watches

Patek Philippe White Gold Automatic Diamond Watch Ref. 3563

Patek Philippe White Gold Automatic Diamond Watch Ref. 3563

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Patek Philippe - Patek Philippe Yellow Gold Travel Time Watch Ref. 2597 - The Keystone Watches

Patek Philippe Yellow Gold Travel Time Watch Ref. 2597

Patek Philippe Yellow Gold Travel Time Watch Ref. 2597

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Patek Philippe - Patek Philippe White Gold Bracelet Watch, Ref. 3266 - The Keystone Watches

Patek Philippe White Gold Bracelet Watch, Ref. 3266

Patek Philippe White Gold Bracelet Watch, Ref. 3266

Sold Out

 
Patek Philippe - Patek Philippe Steel Nautilus Moonphase Watch Ref. 3712 with Original Box and Papers - The Keystone Watches

Patek Philippe Steel Nautilus Moonphase Watch Ref. 3712 with Original Box and Papers

Patek Philippe Steel Nautilus Moonphase Watch Ref. 3712 with Original Box and Papers

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

Patek Philippe Platinum World Time Cloisonne Watch Ref. 5131

Patek Philippe Platinum World Time Cloisonne Watch Ref. 5131

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

Patek Philippe White Gold Perpetual Calendar Chronograph Watch Ref. 5270

Patek Philippe White Gold Perpetual Calendar Chronograph Watch Ref. 5270

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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 White Gold World Time Bracelet Watch Ref. 5130 - The Keystone Watches

Patek Philippe White Gold World Time Bracelet Watch Ref. 5130

Patek Philippe White Gold World Time Bracelet Watch Ref. 5130

Sold Out

 
Patek Philippe - Patek Philippe Yellow Gold Strap Watch, Ref. 2562, Retailed by Tiffany & Co. - The Keystone Watches

Patek Philippe Yellow Gold Strap Watch, Ref. 2562, Retailed by Tiffany & Co.

Patek Philippe Yellow Gold Strap Watch, Ref. 2562, Retailed by Tiffany & Co.

Sold Out

 
Patek Philippe - Patek Philippe Steel Monopusher Salmon Dial Chronograph Watch Ref. 5950 - The Keystone Watches

Patek Philippe Steel Monopusher Salmon Dial Chronograph Watch Ref. 5950

Patek Philippe Steel Monopusher Salmon Dial Chronograph Watch Ref. 5950

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Patek Philippe - Patek Philippe White Gold Annual Calendar Watch Ref. 5146 - The Keystone Watches

Patek Philippe White Gold Annual Calendar Watch Ref. 5146

Patek Philippe White Gold Annual Calendar Watch Ref. 5146

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

Patek Philippe Platinum Annual Calendar Chronograph Watch Ref. 5960

Patek Philippe Platinum Annual Calendar Chronograph Watch Ref. 5960

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Patek Philippe - Patek Philippe White Gold Chronograph Watch Ref. 5170 - The Keystone Watches

Patek Philippe White Gold Chronograph Watch Ref. 5170

Patek Philippe White Gold Chronograph Watch Ref. 5170

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 Perpetual Calendar Watch Ref. 3940 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Watch Ref. 3940

Patek Philippe Platinum Perpetual Calendar Watch Ref. 3940

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Patek Philippe - Patek Philippe White Gold Aquanaut Green Watch Ref. 5168 - The Keystone Watches

Patek Philippe White Gold Aquanaut Green Watch Ref. 5168

Patek Philippe White Gold Aquanaut Green Watch Ref. 5168

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Patek Philippe - Patek Philippe White Gold Minute Repeating Perpetual Ref. 5213, Retailed  by Tiffany & Co. - The Keystone Watches

Patek Philippe White Gold Minute Repeating Perpetual Ref. 5213, Retailed by Tiffany & Co.

Patek Philippe White Gold Minute Repeating Perpetual Ref. 5213, Retailed by Tiffany & Co.

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Patek Philippe - Patek Philippe Rose Gold Nautilus Watch Ref. 5711 - The Keystone Watches

Patek Philippe Rose Gold Nautilus Watch Ref. 5711

Patek Philippe Rose Gold Nautilus Watch Ref. 5711

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Patek Philippe - Patek Philippe White Gold Annual Calendar Watch Ref. 5036 - The Keystone Watches

Patek Philippe White Gold Annual Calendar Watch Ref. 5036

Patek Philippe White Gold Annual Calendar Watch Ref. 5036

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

Patek Phlippe Yellow Gold Nautilus Automatic Watch Ref. 3800

Patek Phlippe Yellow Gold Nautilus Automatic Watch Ref. 3800

Sold Out

 
Patek Philippe - Patek Phlippe White Gold Bracelet Watch Ref. 3430 - The Keystone Watches

Patek Phlippe White Gold Bracelet Watch Ref. 3430

Patek Phlippe White Gold Bracelet Watch Ref. 3430

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

Patek Philippe Yellow Gold, Emerald Nautilus Diamond Watch Ref. 3800

Patek Philippe Yellow Gold, Emerald Nautilus Diamond Watch Ref. 3800

Sold Out

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

Patek Philippe Platinum World Time Cloisonne Watch Ref. 5131

Patek Philippe Platinum World Time Cloisonne Watch Ref. 5131

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Patek Philippe - Patek Philippe Two-Tone Nautilus Ref. 3800 - The Keystone Watches

Patek Philippe Two-Tone Nautilus Ref. 3800

Patek Philippe Two-Tone Nautilus Ref. 3800

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Patek Philippe - Patek Philippe Nautilus Blue Dial Watch Ref. 7118 - The Keystone Watches

Patek Philippe Nautilus Blue Dial Watch Ref. 7118

Patek Philippe Nautilus Blue Dial Watch Ref. 7118

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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 White Gold Automatic Watch Ref. 3525 - The Keystone Watches

Patek Philippe White Gold Automatic Watch Ref. 3525

Patek Philippe White Gold Automatic Watch Ref. 3525

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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

Sold Out

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

Patek Philippe White Gold Nautilus Diamond Watch Ref. 3800

Patek Philippe White Gold Nautilus Diamond Watch Ref. 3800

Sold Out

 
Patek Philippe - Patek Philippe Rose Gold Chronograph Watch Ref. 5070 - The Keystone Watches

Patek Philippe Rose Gold Chronograph Watch Ref. 5070

Patek Philippe Rose Gold Chronograph Watch Ref. 5070

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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 Complications White Gold Annual Calendar Watch Ref. 5205 - The Keystone Watches

Patek Philippe Complications White Gold Annual Calendar Watch Ref. 5205

Patek Philippe Complications White Gold Annual Calendar Watch Ref. 5205

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Patek Philippe - Patek Philippe White Gold Bracelet Onyx Dial Ref. 3729 - The Keystone Watches

Patek Philippe White Gold Bracelet Onyx Dial Ref. 3729

Patek Philippe White Gold Bracelet Onyx Dial Ref. 3729

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Patek Philippe - Patek Philippe Platinum Chronograph Watch Ref. 5070, Retailed by Tiffany & Co. - The Keystone Watches

Patek Philippe Platinum Chronograph Watch Ref. 5070, Retailed by Tiffany & Co.

Patek Philippe Platinum Chronograph Watch Ref. 5070, Retailed by Tiffany & Co.

Sold Out

 
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

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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)

"Price upon request"
 
Audemars Piguet Yellow Gold Coin Watch (New Arrival)

Audemars Piguet Yellow Gold Coin Watch (New Arrival)

Audemars Piguet Yellow Gold Coin Watch (New Arrival)

$9,500 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
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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