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Patek Philippe Yellow Gold Chronograph Watch Ref. 130 (New Arrival)

Patek Philippe Yellow Gold Chronograph Watch Ref. 130 (New Arrival)

Patek Philippe Yellow Gold Chronograph Watch Ref. 130 (New Arrival)

Sold Out

 
Patek Philippe White Gold Perpetual Calendar Ref. 5940

Patek Philippe White Gold Perpetual Calendar Ref. 5940

Patek Philippe White Gold Perpetual Calendar Ref. 5940

Sold Out

 
Patek Philippe Yellow Gold Minute Repeater Watch Ref. 2524, Circa 1953

Patek Philippe Yellow Gold Minute Repeater Watch Ref. 2524, Circa 1953

Patek Philippe Yellow Gold Minute Repeater Watch Ref. 2524, Circa 1953

Sold Out

 
Patek Philippe Yellow Gold Perpetual Calendar Chronograph Ref. 3971, Second Series with Original Box and Papers

Patek Philippe Yellow Gold Perpetual Calendar Chronograph Ref. 3971, Second Series with Original Box and Papers

Patek Philippe Yellow Gold Perpetual Calendar Chronograph Ref. 3971, Second Series with Original Box and Papers

Sold Out

 
Patek Philippe White Gold Beta 21 Ref. 3603 with Original Box and Papers

Patek Philippe White Gold Beta 21 Ref. 3603 with Original Box and Papers

Patek Philippe White Gold Beta 21 Ref. 3603 with Original Box and Papers

Sold Out

 
Patek Philippe White Gold Perpetual Calendar Chronograph Diamond Watch Ref. 5021, Likely Unique

Patek Philippe White Gold Perpetual Calendar Chronograph Diamond Watch Ref. 5021, Likely Unique

Patek Philippe White Gold Perpetual Calendar Chronograph Diamond Watch Ref. 5021, Likely Unique

$600,000 USD
 
Patek Philippe Yellow Gold Nautilus Ref. 3700 with Original Diamonds

Patek Philippe Yellow Gold Nautilus Ref. 3700 with Original Diamonds

Patek Philippe Yellow Gold Nautilus Ref. 3700 with Original Diamonds

"Price upon request"
 
Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 3970, Second Series

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 3970, Second Series

Patek Philippe Platinum Perpetual Calendar Chronograph Watch Ref. 3970, Second Series

"Price upon request"
 
Patek Philippe White Gold Rectangular Art Deco Watch, 1929

Patek Philippe White Gold Rectangular Art Deco Watch, 1929

Patek Philippe White Gold Rectangular Art Deco Watch, 1929

$55,000 USD
 
Patek Philippe Perpetual Calendar Chronograph Ref. 2499, 4th Series

Patek Philippe Perpetual Calendar Chronograph Ref. 2499, 4th Series

Patek Philippe Perpetual Calendar Chronograph Ref. 2499, 4th Series

Sold Out

 
Patek Philippe White Gold Perpetual Calendar Bracelet Watch Ref. 3448, Third Series

Patek Philippe White Gold Perpetual Calendar Bracelet Watch Ref. 3448, Third Series

Patek Philippe White Gold Perpetual Calendar Bracelet Watch Ref. 3448, Third Series

"Price upon request"
 
Patek Philippe Solar Power Musique Enamel Dome Cloisonne Table Clock, 1970s

Patek Philippe Solar Power Musique Enamel Dome Cloisonne Table Clock, 1970s

Patek Philippe Solar Power Musique Enamel Dome Cloisonne Table Clock, 1970s

Sold Out

 
Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 3450 with Clear Exhibition Back

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 3450 with Clear Exhibition Back

Patek Philippe Yellow Gold Perpetual Calendar Watch Ref. 3450 with Clear Exhibition Back

$350,000 USD
 
Patek Philippe Yellow Gold Art Deco Gondolo Watch, Circa 1913

Patek Philippe Yellow Gold Art Deco Gondolo Watch, Circa 1913

Patek Philippe Yellow Gold Art Deco Gondolo Watch, Circa 1913

$90,000 USD
 
Patek Philippe Tropical Dial Nautilus Ref. 3700 with Original Box and Papers

Patek Philippe Tropical Dial Nautilus Ref. 3700 with Original Box and Papers

Patek Philippe Tropical Dial Nautilus Ref. 3700 with Original Box and Papers

Sold Out

 
Patek Philippe Rose Gold Calatrava Ref. 565 Retailed by Hausmann & Co. with Original Certificate from 1953

Patek Philippe Rose Gold Calatrava Ref. 565 Retailed by Hausmann & Co. with Original Certificate from 1953

Patek Philippe Rose Gold Calatrava Ref. 565 Retailed by Hausmann & Co. with Original Certificate from 1953

Sold Out

 
Patek Philippe Yellow Gold Diamond & Turquoise Cover Watch Ref. 3006 with Archives

Patek Philippe Yellow Gold Diamond & Turquoise Cover Watch Ref. 3006 with Archives

Patek Philippe Yellow Gold Diamond & Turquoise Cover Watch Ref. 3006 with Archives

Sold Out

 
Patek Philippe Platinum Calatrava Watch Ref. 570 with Archive Paper

Patek Philippe Platinum Calatrava Watch Ref. 570 with Archive Paper

Patek Philippe Platinum Calatrava Watch Ref. 570 with Archive Paper

Sold Out

 
Patek Philippe Onyx, Malachite & Diamond Watch Ref. 4282

Patek Philippe Onyx, Malachite & Diamond Watch Ref. 4282

Patek Philippe Onyx, Malachite & Diamond Watch Ref. 4282

$60,000 USD
 
Patek Philippe Yellow Gold Perpetual Calendar Ref. 3448 on a Bracelet

Patek Philippe Yellow Gold Perpetual Calendar Ref. 3448 on a Bracelet

Patek Philippe Yellow Gold Perpetual Calendar Ref. 3448 on a Bracelet

Sold Out

 
Patek Philippe Yellow Gold Chronograph Tasti Tondi Watch Ref. 1463, Retailed by Tiffany & Co.

Patek Philippe Yellow Gold Chronograph Tasti Tondi Watch Ref. 1463, Retailed by Tiffany & Co.

Patek Philippe Yellow Gold Chronograph Tasti Tondi Watch Ref. 1463, Retailed by Tiffany & Co.

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

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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.

Stay in touch.

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