Jaeger-LeCoultre 1938 Rectangular Perpetual Calendar

amanico · 2015-11-17T02:37:35Z

Amanico unveils a rare 1938 Jaeger-LeCoultre rectangular perpetual calendar with in-house Caliber 410 QP. Explore this unique vintage JLC complication.

amanico

WPS member · Jaeger-LeCoultre forum

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Amanico unveils a rare and historically significant Jaeger-LeCoultre rectangular perpetual calendar from circa 1938, a piece previously known only through rumor. This post highlights the watch's in-house Caliber 410 QP movement, a combination of the Reverso caliber with a perpetual calendar, and prompts discussion on its unique status and why such an innovation wasn't mass-produced. The article provides a fascinating look into JLC's early complications.

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Yes, Circa 1938...

How many Perpetual Calendars were issued, at that time, with an in house ( Cal 410 QP: The Reverso Calibre + a Perpetual Calendar. ) movement, in a wrist watch?

Of course, this is not the first perpetual calendar from Lecoultre, since we know at least one, a famous one, the Grande Complication from 1928. We also know that at the end of the XIXth century, Lecoultre made some, but these perpetual calendars came in pocket watches.

We heard about the existence of this watch, we knew that circa 1937 / 1938, it was made.

But we never saw it.

It is time to unveil it, thanks to QP Salon.

And the certificate from the Manufacture.

There is a detail which can be noticed. This is one of the rare Jaeger Lecoultre watches to not have the JLC signature on the dial.

Happy to spread the news!

Best,

Nicolas

This message has been edited by amanico on 2015-11-17 02:37:49

Key Points from the Discussion

The author speculates that this unique piece might have been a demonstration of JLC's skill, similar to other exceptional watches made to showcase their capabilities rather than for series production.
A contributor questions why the innovative QP module on the dial side was unique and not utilized for series production, highlighting its advanced concept for the era.
The author expresses appreciation for large, nicely decorated movements, provided they are coherent with the case size, in response to a discussion about movement dimensions.
A link to a Bloomberg article from 2015 about this specific Jaeger-LeCoultre perpetual calendar being offered at auction is provided, adding external context and validation to its historical significance.
A user wonders about the correction mechanisms for the days and dates on this vintage perpetual calendar, contrasting it with the size of many modern movements.

The Discussion

BDLJ

Nov 17, 2015

...is what makes me wonder why so many modern movements are so large. Though I also have to wonder how days and dates are corrected?

amanico

Nov 17, 2015

But I don't complain about the size of the movement, as long as it is coherent with the size of the case. And I quite like big and nicely decorated movements! Best, Nicolas

crown comfort

Nov 17, 2015

it reminds me of another watch (another brand) from the 90ies. Can you guess which one?

crown comfort

Nov 17, 2015

although the position of the moon phase is at 3 o'clock.

HerrK

Nov 17, 2015

... concept with the qp-module on the dialside. If so, why was it unique and has not been utilised for series-production? Best Christian

watchme

Nov 17, 2015

What are the dimensions of the head? -Dean

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Jaeger-LeCoultre 1938 Rectangular Perpetual Calendar

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