Jaeger-LeCoultre Master Ultra Thin Calendar SIHH 2015

amanico · 2015-02-05T00:01:02Z

First look at the Jaeger-LeCoultre Master Ultra Thin Calendar from SIHH 2015. Explore its 39mm case, Caliber 891/2-448, and design details. Is it the perfect balance?

amanico

WPS member · Jaeger-LeCoultre forum

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Nicolas (amanico) provides an initial look at the Jaeger-LeCoultre Master Ultra Thin Calendar from SIHH 2015, positioning it as an elegant middle ground between the MUT Moon 39 and the MUT Perpetual Calendar. His detailed observations on its design, dimensions, and movement offer a valuable first impression for collectors considering this refined timepiece.

For those who found that the MUT Moon 39 dial was a bit empty, the new Master Ultra Thin Calendar is a pleasant alternative.

Same 39 mm case, 9, 9 mm high, exactly like the MUT Moon 39 ( which is, once again, not ultra thin at all ), but not less elegant.

The automatic movement is the Cal 891/2-448 which beats at 28 800 vibrations per hour, offers an autonomy of 38 hours ( a tad short, though ) , and made of 275 pièces.

The case is in white gold. I am sure it would be interesting to have a steel version, with a black dial. But let's not spoil our pleasure.

Indeed, we have a nicely profiled case, with a lot of class, and a superb dial, with a triple date configuration.

The treatment of the indexes and hands remind me the Master Ultra Thin Perpetual Calendar decoration, in white gold.

One detail I would have liked to see: The date, in blue. It would have been nicer, I think.

Here are the live pictures:

A smart offer, between the MUT Moon 39 and the MUT Perpetual Calendar, don't you think so?

Best,

Nicolas

This message has been edited by amanico on 2015-02-05 00:04:22

Key Points from the Discussion

There is a notable discrepancy in the date numeral orientation between initial live pictures and official press images, with some preferring the "non-flipped" numerals for a vintage charm reminiscent of 1950s JLC triple-date moonphase watches.
While the 39mm size is ideal, some collectors find the Master Ultra Thin cases, with their thin bezels and lugs, lean too far into feminine aesthetics, preferring the more robust proportions of current Master Chrono and Memovox cases.
The design of current JLC calendars, drawing inspiration from the brand's "hey-days" of calendar watches, represents a successful rejuvenation of classic themes while maintaining a link to historical models.
A steel version with a black dial, or even blued indices, hands, and date crescent, paired with a navy strap, would create a highly appealing and versatile business/casual watch.
The 37mm Master cases were well-proportioned, but larger 41mm+ cases in the Master line often lost their elegance, suggesting a sweet spot for JLC's design language.
The Master Ultra Thin Calendar effectively addresses the legibility issue of the date ring found in the MUT Moon, offering a clearer display without compromising dial balance.

The Discussion

penny

Feb 5, 2015

but... Certainly go more interested in stainless steel ^^; Question for you, dial plate's eggshell like "mut ppc"??

amanico

Feb 5, 2015

Thanks for your feedback, Penny! Nicolas

hs111

Feb 5, 2015

.. Maybe also there, dark blue might have been nice, probably (?).. Other than that, yet another classic to fill the little gap, as mentioned by you .. Interesting to me, how LGM does some rejuvenation to the classics with the smaller & thinner cases.. Finally, +1 on the idea of a black dialled one.. The latter might be tempting for me, I guess. Thx for the update & nice pics, as always Best, hs

amanico

Feb 5, 2015

Here is an official picture: A black dial... Hmmmm... Like this one? I am a big fan of " Ultra Thin " cases which are very elegant. Best, Nicolas

rnaden

Feb 5, 2015

Compared to the MUT Moon, this complication, especially the date is legible, and doesn't distract from the balance of the dial. I like it a lot...now, just to wait for the steel version...

dr.kol

Feb 5, 2015

But for me the best watch in this class is Blancpain complete calendar. The new system, correctors under the lugs, make it very appealing. Furthermore,, this Blancpain is one of the watches that started the renaissance of mechanical watches. Best, Kari

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Jaeger-LeCoultre Master Ultra Thin Calendar SIHH 2015

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