Tourbillon Perpetual Calendar | 720.025F | Platinum for-the-study in addition to a mesmerising

in addition to a mesmerising guilloche pattern that curves around the dial from two different angles

Period correct white gold buckle

with 24 cities included

first devised in the last decade of the 20th century

Having first developed the dual-time functionality for an earlier reference

Tourbillon Perpetual Calendar | 720.025F | Platinum for-the-study in addition to a mesmerisingThis 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