This is the new Jaeger-LeCoultre Master Grande Tradition à Quantième Perpétuel 8 jours SQ, inspired by a historical Grande Complication pocket-watch from 1928. This watch combines the best of enameling, openworking (aka skeletonizing/squelette aka “SQ”), and engraving in addition to the highly complicated Jaeger-LeCoultre Caliber 876 perpetual calendar movement in skeletonized form.
Jaeger-LeCoultre Master Grande Tradition à QP 8 Jours SQ
limited edition 200 pieces
42mm white gold case (11.55mm thick), manual wind JLC Caliber 876 (double barrel, 8 days power reserve, 28,800/4Hz)
In addition to the time, the dial also displays the the date, the day of the week, the month, the year (which is absurdly challenging to read , and the age of the moon. There is also a power-reserve indicator and a day/night display with a red safety zone highlighting the calendar’s daily switching phase (i.e. indicating a time not to be setting the watch!). You can see the pusher on the side of the case (~8 o’clock) that advances all calendar displays one day at a time for easier setting.
Jaeger-LeCoultre Master engraver Dominique Vuez at work
You can see in these images how the watch has been meticulously openworked and engraved.
Also, on the outer edge of the case — both front side and back — is ringed with bleu enamel, done in the grand fre “champleve” method. Of course the press image renderings here do the enamel modest justice at best — the actual surface is delicately polished and will exude its own unique character and hue of blue.
Jaeger-LeCoultre Master enameller Miklos Merczel at work
The inspiration, circa 1928
A splendid watch with not only the heralded perpetual calendar function but representing a fine demonstration of the unique character brought on by master engraving, enamelling and skeleton work.
Nicely done Jaeger-LeCoultre.