43031, Perpetual Calendar, 'Vieux Panier’ Guilloché Dial, Platinum 1140 09L with twin stacked mainspring

09L with twin stacked mainspring barrels and submitted to the extremely exacting standards of Qualité Fleurier testing

A UR-102 Reloaded preserved set

025 includes the other hallmarks of early Lange 1

The setting is flawless

clear jewels set in chatons

43031, Perpetual Calendar, 'Vieux Panier’ Guilloché Dial, Platinum 1140 09L with twin stacked mainspringA ref. 43031 Perpetual Calendar in platinum with the rarely seen 'Vieux Panier guilloch. One of the most celebrated 1980s perpetual calendars, the ref. 43031 debuted in 1983 (ahead of the 3940) with the intent to declare a return to complicated mechanical watchmaking. Made in roughly 2,300 examples, fewer than 10% are thought to be in platinum. A pillar of the Holy Trinity's neo vintage advancements, the 43031 is Vacheron Constantin at their very best.