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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

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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

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5970 Unworn and in Original Seal - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5970 Unworn and in Original Seal

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 5970 Unworn and in Original Seal

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Chronograph, Ref. 5270P - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Chronograph, Ref. 5270P

Patek Philippe Platinum Perpetual Calendar Chronograph, Ref. 5270P

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Diamond Watch Ref. 5971 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Diamond Watch Ref. 5971

Patek Philippe Platinum Perpetual Calendar Diamond Watch Ref. 5971

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Minute Repeater Chronograph Ref. 5208 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Minute Repeater Chronograph Ref. 5208

Patek Philippe Platinum Perpetual Calendar Minute Repeater Chronograph Ref. 5208

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Minute Repeater Ref. 5074, Single Sealed - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Minute Repeater Ref. 5074, Single Sealed

Patek Philippe Platinum Perpetual Calendar Minute Repeater Ref. 5074, Single Sealed

"Price upon request"
 
Patek Philippe - Patek Philippe Platinum Perpetual Calendar Minute Repeater Ref. 5074, Unworn Condition - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Minute Repeater Ref. 5074, Unworn Condition

Patek Philippe Platinum Perpetual Calendar Minute Repeater Ref. 5074, Unworn Condition

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Patek Philippe Platinum Perpetual Calendar Minute Repeater Ref. 5307 (Private Sale)

Patek Philippe Platinum Perpetual Calendar Minute Repeater Ref. 5307 (Private Sale)

"Price upon request"
 
Patek Philippe - Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5013 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5013

Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5013

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5074, One of Only Two Known - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5074, One of Only Two Known

Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5074, One of Only Two Known

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5374 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5374

Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5374

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5374 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5374

Patek Philippe Platinum Perpetual Calendar Minute Repeater Watch Ref. 5374

$875,000 USD
 
Patek Philippe - Patek Philippe Platinum Perpetual Calendar Ref 5140 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Ref 5140

Patek Philippe Platinum Perpetual Calendar Ref 5140

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Patek Philippe Platinum Perpetual Calendar Ref. 3940

Patek Philippe Platinum Perpetual Calendar Ref. 3940

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Ref. 3940P with Original Warranty Paper - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Ref. 3940P with Original Warranty Paper

Patek Philippe Platinum Perpetual Calendar Ref. 3940P with Original Warranty Paper

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Ref. 5496 with Box and Papers - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Ref. 5496 with Box and Papers

Patek Philippe Platinum Perpetual Calendar Ref. 5496 with Box and Papers

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Retrograde Ref. 5059P (New Arrival) - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Retrograde Ref. 5059P (New Arrival)

Patek Philippe Platinum Perpetual Calendar Retrograde Ref. 5059P (New Arrival)

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Retrograde Ref. 5496 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Retrograde Ref. 5496

Patek Philippe Platinum Perpetual Calendar Retrograde Ref. 5496

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Retrograde Watch Ref. 5059 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Retrograde Watch Ref. 5059

Patek Philippe Platinum Perpetual Calendar Retrograde Watch Ref. 5059

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Retrograde Watch Ref. 5496 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Retrograde Watch Ref. 5496

Patek Philippe Platinum Perpetual Calendar Retrograde Watch Ref. 5496

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Split Seconds Chrono Ref. 5004 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Split Seconds Chrono Ref. 5004

Patek Philippe Platinum Perpetual Calendar Split Seconds Chrono Ref. 5004

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Split Seconds Chrono Ref. 5004 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Split Seconds Chrono Ref. 5004

Patek Philippe Platinum Perpetual Calendar Split Seconds Chrono Ref. 5004

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

Patek Philippe Platinum Perpetual Calendar Split Seconds Chronograph Ref. 5004

Patek Philippe Platinum Perpetual Calendar Split Seconds Chronograph Ref. 5004

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Split Seconds Chronograph Ref. 5004P with Unique Red Numeral 2 (Private Sale) - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Split Seconds Chronograph Ref. 5004P with Unique Red Numeral 2 (Private Sale)

Patek Philippe Platinum Perpetual Calendar Split Seconds Chronograph Ref. 5004P with Unique Red Numeral 2 (Private Sale)

"Price upon request"
 
Patek Philippe - Patek Philippe Platinum Perpetual Calendar Split Seconds Chronograph Watch Ref. 5204P - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Split Seconds Chronograph Watch Ref. 5204P

Patek Philippe Platinum Perpetual Calendar Split Seconds Chronograph Watch Ref. 5204P

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Split Seconds Watch Ref. 5204 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Split Seconds Watch Ref. 5204

Patek Philippe Platinum Perpetual Calendar Split Seconds Watch Ref. 5204

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Patek Philippe Platinum Perpetual Calendar Split Seconds Watch Ref. 5204

Patek Philippe Platinum Perpetual Calendar Split Seconds Watch Ref. 5204

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Tourbillon Watch Ref. 5016 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Tourbillon Watch Ref. 5016

Patek Philippe Platinum Perpetual Calendar Tourbillon Watch Ref. 5016

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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

Sold Out

 
Patek Philippe - Patek Philippe Platinum Perpetual Calendar Watch Ref. 5040 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5040

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5040

Sold Out

 

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5040

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5040

Sold Out

 
Patek Philippe - Patek Philippe Platinum Perpetual Calendar Watch Ref. 5140 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5140

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5140

Sold Out

 
Patek Philippe - Patek Philippe Platinum Perpetual Calendar Watch Ref. 5140 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5140

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5140

Sold Out

 
Patek Philippe - Patek Philippe Platinum Perpetual Calendar Watch Ref. 5140 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5140

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5140

Sold Out

 
Patek Philippe - Patek Philippe Platinum Perpetual Calendar Watch Ref. 5140 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5140

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5140

Sold Out

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New Arrivals Preview
 
Piaget - Piaget White Gold Mechanical Bracelet Watch Ref. P10178 (New Arrival) - The Keystone Watches

Piaget White Gold Mechanical Bracelet Watch Ref. P10178 (New Arrival)

Piaget White Gold Mechanical Bracelet Watch Ref. P10178 (New Arrival)

$10,750 USD
 
Piaget - Piaget White Gold Watch Ref. 80131 (New Arrival) - The Keystone Watches

Piaget White Gold Watch Ref. 80131 (New Arrival)

Piaget White Gold Watch Ref. 80131 (New Arrival)

$9,500 USD
 
Omega - Omega Yellow Gold Automatic Watch Retailed by Turler (New Arrival) - The Keystone Watches

Omega Yellow Gold Automatic Watch Retailed by Turler (New Arrival)

Omega Yellow Gold Automatic Watch Retailed by Turler (New Arrival)

$4,950 USD
 
Breguet - Breguet Yellow Gold Classique Ref. 3210 (NEW ARRIVAL) - The Keystone Watches

Breguet Yellow Gold Classique Ref. 3210 (NEW ARRIVAL)

Breguet Yellow Gold Classique Ref. 3210 (NEW ARRIVAL)

$7,200 USD
 
Audemars Piguet - Audemars Piguet White Gold Round Watch with Beaded Bracelet and Pave Diamond and Sapphire Dial (New Arrival) - The Keystone Watches

Audemars Piguet White Gold Round Watch with Beaded Bracelet and Pave Diamond and Sapphire Dial (New Arrival)

Audemars Piguet White Gold Round Watch with Beaded Bracelet and Pave Diamond and Sapphire Dial (New Arrival)

$9,800 USD
 
Louis Vuitton - Louis Vuitton Green Ceramic Monterey II (New Arrival) - The Keystone Watches

Louis Vuitton Green Ceramic Monterey II (New Arrival)

Louis Vuitton Green Ceramic Monterey II (New Arrival)

$8,800 USD
 
Omega - Omega Yellow Gold Vintage Pocket Watch 1182.61 (New Arrival) - The Keystone Watches

Omega Yellow Gold Vintage Pocket Watch 1182.61 (New Arrival)

Omega Yellow Gold Vintage Pocket Watch 1182.61 (New Arrival)

$6,500 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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