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Patek Philippe Platinum Split Seconds Chronograph Watch Ref. 5951P

Patek Philippe Platinum Split Seconds Chronograph Watch Ref. 5951P

Patek Philippe Platinum Split Seconds Chronograph Watch Ref. 5951P

$450,000 USD
 
A. Lange & Sohne - A. Lange & Sohne Platinum 1815 Tourbillon Watch Ref. 730.025 - The Keystone Watches

A. Lange & Sohne Platinum 1815 Tourbillon Watch Ref. 730.025

A. Lange & Sohne Platinum 1815 Tourbillon Watch Ref. 730.025

Sold Out

 
Rolex White Gold GMT Master II Ref. 116759SARU Sapphire and Ruby Bezel with Pave Diamond Dial and Card (New Arrival)

Rolex White Gold GMT Master II Ref. 116759SARU Sapphire and Ruby Bezel with Pave Diamond Dial and Card (New Arrival)

Rolex White Gold GMT Master II Ref. 116759SARU Sapphire and Ruby Bezel with Pave Diamond Dial and Card (New Arrival)

Sold Out

 
Patek Philippe World Time Flyback Chronograph Ref. 5935A-001 with Box and Papers (New Arrival)

Patek Philippe World Time Flyback Chronograph Ref. 5935A-001 with Box and Papers (New Arrival)

Patek Philippe World Time Flyback Chronograph Ref. 5935A-001 with Box and Papers (New Arrival)

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Patek Philippe White Gold Perpetual Calendar Chronograph Ref. 5204 (New Arrival)

Patek Philippe White Gold Perpetual Calendar Chronograph Ref. 5204 (New Arrival)

Patek Philippe White Gold Perpetual Calendar Chronograph Ref. 5204 (New Arrival)

Sold Out

 
A. Lange & Sohne White Gold Lange 1 Ref. 101.039 (New Arrival)

A. Lange & Sohne White Gold Lange 1 Ref. 101.039 (New Arrival)

A. Lange & Sohne White Gold Lange 1 Ref. 101.039 (New Arrival)

Sold Out

 
Rolex White Gold GMT-Master II Ref. 116759SA (New Arrival)

Rolex White Gold GMT-Master II Ref. 116759SA (New Arrival)

Rolex White Gold GMT-Master II Ref. 116759SA (New Arrival)

Sold Out

 
Patek Philippe White Gold Nautilus Watch Ref. 3800/130 with Baguette Diamond Bezel

Patek Philippe White Gold Nautilus Watch Ref. 3800/130 with Baguette Diamond Bezel

Patek Philippe White Gold Nautilus Watch Ref. 3800/130 with Baguette Diamond Bezel

"Price upon request"
 
Patek Philippe Platinum Perpetual Calendar Minute Repeater Ref. 5307

Patek Philippe Platinum Perpetual Calendar Minute Repeater Ref. 5307

Patek Philippe Platinum Perpetual Calendar Minute Repeater Ref. 5307

$1,850,000 USD
 
Cartier Yellow Gold Pebble Watch Ref. WGPB0003

Cartier Yellow Gold Pebble Watch Ref. WGPB0003

Cartier Yellow Gold Pebble Watch Ref. WGPB0003

Sold Out

 
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)

Sold Out

 
Patek Philippe Platinum Perpetual Calendar Ref. 5496

Patek Philippe Platinum Perpetual Calendar Ref. 5496

Patek Philippe Platinum Perpetual Calendar Ref. 5496

Sold Out

 
Patek Philippe Rose Gold Perpetual Calendar Watch Ref. 5040

Patek Philippe Rose Gold Perpetual Calendar Watch Ref. 5040

Patek Philippe Rose Gold Perpetual Calendar Watch Ref. 5040

Sold Out

 
Piaget Rose Gold Altiplano Tourbillon Ref. P11485 with Malachite Marquetry Dial

Piaget Rose Gold Altiplano Tourbillon Ref. P11485 with Malachite Marquetry Dial

Piaget Rose Gold Altiplano Tourbillon Ref. P11485 with Malachite Marquetry Dial

$70,000 USD
 
Patek Philippe Steel 5711 First Serial 2006 Complete Retail Ready

Patek Philippe Steel 5711 First Serial 2006 Complete Retail Ready

Patek Philippe Steel 5711 First Serial 2006 Complete Retail Ready

Sold Out

 
Patek Philippe Yellow Gold Perpetual Calendar Chronograph Watch Ref. 3970

Patek Philippe Yellow Gold Perpetual Calendar Chronograph Watch Ref. 3970

Patek Philippe Yellow Gold Perpetual Calendar Chronograph Watch Ref. 3970

Sold Out

 
Audemars Piguet Steel Royal Oak Ref. 14790st

Audemars Piguet Steel Royal Oak Ref. 14790st

Audemars Piguet Steel Royal Oak Ref. 14790st

Sold Out

 
Rolex - Rolex Steel Datejust Ref. 16234 with Sodalite Dial - The Keystone Watches

Rolex Steel Datejust Ref. 16234 with Sodalite Dial

Rolex Steel Datejust Ref. 16234 with Sodalite Dial

Sold Out

 
Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5271 with Baguette Diamonds

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5271 with Baguette Diamonds

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5271 with Baguette Diamonds

"Price upon request"
 
Patek Philippe Rose Gold Perpetual Calendar Ref. 5040

Patek Philippe Rose Gold Perpetual Calendar Ref. 5040

Patek Philippe Rose Gold Perpetual Calendar Ref. 5040

Sold Out

 
Patek Philippe Rose Gold Rare Handcraft Minute Repeater Watch Ref. 7000 with Cloisonne Swallows

Patek Philippe Rose Gold Rare Handcraft Minute Repeater Watch Ref. 7000 with Cloisonne Swallows

Patek Philippe Rose Gold Rare Handcraft Minute Repeater Watch Ref. 7000 with Cloisonne Swallows

"Price upon request"
 
Patek Philippe White Gold Chronograph Diamond Watch Ref. 5071 (New Arrival)

Patek Philippe White Gold Chronograph Diamond Watch Ref. 5071 (New Arrival)

Patek Philippe White Gold Chronograph Diamond Watch Ref. 5071 (New Arrival)

Sold Out

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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 - 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
 
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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