JLC Master Control Calendar Reference Guide

quattro · 2025-03-27T19:12:15Z

Explore the Jaeger-LeCoultre Master Control Calendar & Jumping Date (2020 update) with quattro's in-depth review, covering steel and rose gold references, caliber 866, and the innovative jumping date mechanism. Discover collector insights and detailed photos.

quattro

WPS member · Jaeger-LeCoultre forum

28 replies3175 views26 photos

Emmanuel, known as quattro on WatchProSite, provides a detailed look at the updated Jaeger-LeCoultre Master Control Calendar & Jumping Date, launched in 2020. This article serves as an essential reference for collectors interested in the evolution of JLC's calendar complications, highlighting the thoughtful design of its jumping date mechanism. Emmanuel meticulously documents various references, showcasing the steel and rose gold iterations, including the limited edition blue dial.

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Following up on my recent thread dedicated to the Master Control Chronograph Calendar, here's the Calendar & Jumping Date (in French, 'Quantième & Date Sautante', as written at the bottom of the dial, where the date pointer jumps from 4:30 to 7:30 in order to never cover the moon phase). It's the updated edition launched in 2020.

With a 40 x 10.95 mm case and caliber 866, it's a very good looking watch.

You can find here a review and great photos by amanico.

Have a great weekend!

Best,

Emmanuel

A/ STEEL

1/ Ref. Q4148420 with leather strap (2020)

credit: Otherwise-Art7507 on reddit (1-2) & Prestige time (3-4)

2/ Ref. Q4148120 with bracelet (2022)

credit: monochrome

3/ Ref. 4148480 with a blue dial (it was introduced in 2022 as a limited edition of 800 pieces)

credit: bmats on watchuseek (1-3 & 8), monochrome (4-7) & swissmadetexan on watchuseek (9)

B/ ROSE GOLD, ref. Q4142520 (2020)

credit: wear the time (1), he spoke style on YouTube (2-4), jw-oomiya (5) & happy jewellers (6-7)

Review of the ref. Q4148420 by Tim Mosso with the jumping date in action

Key Points from the Discussion

The 37mm Master Control Calendar from the 1990s represents a classic JLC design, offering a more compact alternative to the newer 40mm models.
The jumping date complication, designed to clear the moon phase display, is a clever feature, though some humorously point out that the hour and minute hands can still obscure other elements.
For collectors, choosing between JLC's diverse offerings like the Reverso, Master Control, or even a Vacheron Constantin Overseas, often involves weighing aesthetic preferences, wearability for different occasions, and long-term collection goals against price points and complications.
The Master Control Date, a simpler variant without the full calendar, offers a very clean aesthetic that some collectors might prefer for its understated elegance.

The Discussion

Mar 7, 2025

Normally I prefer straps but I have to say the steel bracelet works rather well with this watch. Thanks for the pics, Emmanuel.

quattro

Mar 7, 2025

Yes, it looks nice.

I would nonetheless choose the rose gold version, which appeals to me even more (as almost always...).

Larrykelley11

Mar 7, 2025

The blue dial version is Lovely!

quattro

Mar 7, 2025