Master Calendar

The Jaeger-LeCoultre Master Calendar brings classic triple-calendar functionality into a refined, contemporary package. Inspired by the maison’s mid-century full calendar watches, this 39mm model captures the elegance of vintage JLC while updating proportions and finishing for modern tastes. The moonphase display at six o’clock, paired with day, date, and month indications, makes it a favorite among collectors seeking both mechanical intrigue and everyday versatility.

Reference numbers such as Q1558420 (steel) and Q1552520 (rose gold) distinguish the primary variants, with dial color and case material driving most price differences. The steel versions are generally more accessible, while gold commands a premium, especially on original alligator straps with matching buckles. Early production runs may feature subtle dial text or logo changes, which can affect desirability among purists.

All Master Calendar models in this generation use the in-house Caliber 866 automatic movement, appreciated for its reliability and slim profile. Water resistance is rated at 50 meters, making it suitable for daily wear, though not for swimming. When buying, inspect the moonphase disk and calendar hands for signs of improper setting—service history is key, as mishandling the calendar functions can lead to costly repairs. This model offers a compelling blend of heritage, functionality, and value in the JLC lineup.