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Patek Philippe Yellow Gold First Series Ref. 3448 with Indelible Enamel and Original Certificate

Patek Philippe Yellow Gold First Series Ref. 3448 with Indelible Enamel and Original Certificate

Patek Philippe Yellow Gold First Series Ref. 3448 with Indelible Enamel and Original Certificate

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Patek Philippe Platinum Perpetual Calendar Watch Ref. 5970 with Grey Dial and Red Hands

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5970 with Grey Dial and Red Hands

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5970 with Grey Dial and Red Hands

$1,550,000 USD
 
Patek Philippe Platinum Perpetual Calendar Split Seconds Chronograph Ref. 5004P-047 with Unique Lucky 8 Dial

Patek Philippe Platinum Perpetual Calendar Split Seconds Chronograph Ref. 5004P-047 with Unique Lucky 8 Dial

Patek Philippe Platinum Perpetual Calendar Split Seconds Chronograph Ref. 5004P-047 with Unique Lucky 8 Dial

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Patek Philippe - Patek Philippe Steel Nautilus Baby Blue Watch Ref. 3800 - The Keystone Watches

Patek Philippe Steel Nautilus Baby Blue Watch Ref. 3800

Patek Philippe Steel Nautilus Baby Blue Watch Ref. 3800

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Patek Philippe Aquanaut Albino Dial Watch Ref. 5065 with Original Hangtag, Unique

Patek Philippe Aquanaut Albino Dial Watch Ref. 5065 with Original Hangtag, Unique

Patek Philippe Aquanaut Albino Dial Watch Ref. 5065 with Original Hangtag, Unique

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Patek Philippe Platinum Minute Repeater Enamel Watch Ref. 5078 Box and Papers (New Arrival)

Patek Philippe Platinum Minute Repeater Enamel Watch Ref. 5078 Box and Papers (New Arrival)

Patek Philippe Platinum Minute Repeater Enamel Watch Ref. 5078 Box and Papers (New Arrival)

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Patek Philippe Yellow Gold Calatrava Ref. 2526 with Scallop Bracelet

Patek Philippe Yellow Gold Calatrava Ref. 2526 with Scallop Bracelet

Patek Philippe Yellow Gold Calatrava Ref. 2526 with Scallop Bracelet

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Patek Philippe Steel Aquanaut Ref. 5060 with Original Papers

Patek Philippe Steel Aquanaut Ref. 5060 with Original Papers

Patek Philippe Steel Aquanaut Ref. 5060 with Original Papers

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Patek Philippe Yellow Gold Calatrava Watch Ref. 3445 with Original Papers

Patek Philippe Yellow Gold Calatrava Watch Ref. 3445 with Original Papers

Patek Philippe Yellow Gold Calatrava Watch Ref. 3445 with Original Papers

$25,000 USD
 
Patek Philippe Yellow Gold Diamond Nautilus Ref. 4700 with Emerald Markers

Patek Philippe Yellow Gold Diamond Nautilus Ref. 4700 with Emerald Markers

Patek Philippe Yellow Gold Diamond Nautilus Ref. 4700 with Emerald Markers

Sold Out

 
Patek Philippe Yellow Gold Beta 21 Watch Ref. 3587

Patek Philippe Yellow Gold Beta 21 Watch Ref. 3587

Patek Philippe Yellow Gold Beta 21 Watch Ref. 3587

$62,000 USD
 
Patek Philippe Steel Nautilus Ref. 3700

Patek Philippe Steel Nautilus Ref. 3700

Patek Philippe Steel Nautilus Ref. 3700

$145,000 USD
 
Patek Philippe - Patek Philippe White Gold Beta 21 Ref. 3587 on Swiss Cheese Bracelet - The Keystone Watches

Patek Philippe White Gold Beta 21 Ref. 3587 on Swiss Cheese Bracelet

Patek Philippe White Gold Beta 21 Ref. 3587 on Swiss Cheese Bracelet

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Patek Philippe Pink Gold Minute Repeater Unique Baguette Dial Ref. 5013

Patek Philippe Pink Gold Minute Repeater Unique Baguette Dial Ref. 5013

Patek Philippe Pink Gold Minute Repeater Unique Baguette Dial Ref. 5013

$900,000 USD
 
Patek Philippe Yellow Gold Calatrava Ref. 3915 with Original Papers

Patek Philippe Yellow Gold Calatrava Ref. 3915 with Original Papers

Patek Philippe Yellow Gold Calatrava Ref. 3915 with Original Papers

$15,000 USD
 
Patek Philippe Pink Gold Tachymeter Chronograph Watch Ref. 1579

Patek Philippe Pink Gold Tachymeter Chronograph Watch Ref. 1579

Patek Philippe Pink Gold Tachymeter Chronograph Watch Ref. 1579

$200,000 USD
 
Patek Philippe Yellow Gold Ellipse Ref. 3987

Patek Philippe Yellow Gold Ellipse Ref. 3987

Patek Philippe Yellow Gold Ellipse Ref. 3987

$16,900 USD
 
Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 3448

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 3448

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 3448

Sold Out

 
Patek Philippe Yellow Gold Calatrava Watch Ref. 2532

Patek Philippe Yellow Gold Calatrava Watch Ref. 2532

Patek Philippe Yellow Gold Calatrava Watch Ref. 2532

$33,000 USD
 
Patek Philippe Steel Aquanaut Ref. 5065

Patek Philippe Steel Aquanaut Ref. 5065

Patek Philippe Steel Aquanaut Ref. 5065

$55,000 USD
 
Patek Philippe Yellow Gold Ellipse Ref. 3989 (New Arrival)

Patek Philippe Yellow Gold Ellipse Ref. 3989 (New Arrival)

Patek Philippe Yellow Gold Ellipse Ref. 3989 (New Arrival)

$16,900 USD
 
Patek Philippe White Gold Calatrava Ref. 5196

Patek Philippe White Gold Calatrava Ref. 5196

Patek Philippe White Gold Calatrava Ref. 5196

Sold Out

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New Arrivals Preview
 
Audemars Piguet John Shaeffer Star Wheel Minute Repeater Ref. 25881OR (New Arrival)

Audemars Piguet John Shaeffer Star Wheel Minute Repeater Ref. 25881OR (New Arrival)

Audemars Piguet John Shaeffer Star Wheel Minute Repeater Ref. 25881OR (New Arrival)

$300,000 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
 
Audemars Piguet Royal Oak Dual Time Watch Ref. 25730 with Bright Yellow Dial (New Arrival)

Audemars Piguet Royal Oak Dual Time Watch Ref. 25730 with Bright Yellow Dial (New Arrival)

Audemars Piguet Royal Oak Dual Time Watch Ref. 25730 with Bright Yellow Dial (New Arrival)

$105,000 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
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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