Jaeger-LeCoultre proudly presents the Master 1538420 Series timepiece, refined under BA1 Factory craftsmanship. Over two years of development, professional watchmakers conducted countless tests, during which more than a hundred movements were dismantled and refined. From the week display, moonphase, to date and month functions, every detail has been carefully reconstructed to reflect the essence of the original watchmaking craftsmanship, presented with a subtly distinct interpretation that preserves its timeless appeal.
The new Master Calendar 1538420 Series features a 42mm case designed for comfortable wrist wear. The layout includes:
9 o’clock sub-dial: weekday display
3 o’clock sub-dial: month display
6 o’clock sub-dial: moonphase and 24-hour indication
Peripheral ring: time display
Both the front and back are equipped with sapphire crystal glass, ensuring durability and clarity. The strap is made from imported Italian leather, paired with a folding clasp crafted from the same material as the case for consistency in design.
Powered by an imported 9100 multifunction automatic movement, the watch aims to closely replicate the performance and power reserve of the original configuration.
A refined expression of mechanical complexity and elegance, this timepiece offers the essence of haute horology at accessible value.




