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The Keystone Watches
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A. Lange & Sohne Platinum Rattrapantee Perpetual Calendar Ref. 421.025

$185,000.00

A. Lange Sohne White Gold Flyback Chronograph Ref. 401.026

$60,000.00

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

$155,000.00

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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. 

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CONTACT US

You can reach us by emailing hello@thekeystone.com or call 213-632-9061

We are based in Beverly Hills, 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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