Tourbillon Perpetual Calendar | 720.025F | Platinum for-the-study bezel and case edges provide

bezel and case edges provide a distinct contrast with the brushed surface of the case and bracelet

The case zips around with a concealed coil zip in a matching colour and opens out fully so both sides of the case lie flat

A "Transitional" Reference

with 24 cities included

Tourbillon Perpetual Calendar | 720.025F | Platinum for-the-study bezel and case edges provideThis Tourbillon Perpetual Calendar* is a highly complicated time piece that marked the introduction of a tourbillon with an automatic movement into the A. Lange & Shne catalogue, and their first use of the instant jump calendar indication. Only 100 pieces were made in platinum. The watch marks a fascinating point in the history of modern Lange watches. This Tourbillon Perpetual Calendar reference 720. 025F was launched in 2012, introducing a number of