News April 2008

Its intense Tuscany shade of blue, its exquisitely pure lines and its ultra-thin profile are truly fascinating. Exuding an air of casual elegance, the Jules Audemars 30th Anniversary Perpetual Calendar appears to have captured the elusive secrets of the passing of time.

Perpetual Calendar

Jules Audemars 30th Anniversary

The Watch Quote™ - April 30th, 2008

In 1978, Audemars Piguet caused a sensation by introducing the first ultra-thin selfwinding perpetual calendar. The watchmakers in Le Brassus are now paying tribute to this creation with a special anniversary limited edition of 90. The barely 4 mm thick movement of the Jules Audemars 30th Anniversary Perpetual Calendar represents a spectacular feat of miniaturisation.

How can a timepiece, merely by the meshing of its toothed wheels, levers and clicks, successfully indicate the day, the date, the month, the moon phases and leap-year cycle? The perpetual calendar system is an admirable mechanical reproduction of our calendar.

The irregularity of the 30- or 31-day months is controlled by a cam – which is itself connected to a wheel – on which the various lengths of the months are defined. On the same axis, a new wheel bearing a cam indicating standard months of February and a leap-year month of February performs one turn every four years and is thus able to take the leap-year cycle into account. This means that the Jules Audemars 30th Anniversary Perpetual Calendar will require no correction before March 1st 2100. All that will be required on this date is to actuate the correctors positioned on the side of the case, and the mechanism will be fully readjusted for another century.

The broad bezel diameter facilitates reading off the time as well as the various calendar subdials. The latter are surrounded by a polished decorated fillet that highlights their snailed décor making a pleasing contrast with the satin-brushed finish of the dial.

However, its radiance is essentially due to the Tuscany shade of blue specially selected for this occasion and which is unmistakably reminiscent of the skies graced with angelic figures as depicted in the works of 15th century Florentine painters. Combined with the noble platinum case and white gold hands and hour-markers, it vividly expresses the fresh take on classicism embodied in the Jules Audemars 30th Anniversary Perpetual Calendar.

Jules Audemars 30th Anniversary Perpetual Calendar

Ref.: 26000PT.OO.D028CR.01


Reference:26000PT.OO.D028CR.01
Limited series of 90
Movement:Calibre: 2120/2802, ultra-thin, selfwinding
Total diameter: 12? lignes (28.4 mm)
Casing-diameter: 28 mm
Thickness: 4 mm
38 jewels
355 parts
Power reserve: up to 40 hours
Cadence of the balance: 19,800 vibrations per hour
Finishing: all movement parts bevelled, adorned with a “côtes de Genève” motif and circular-grained
Case:950 platinum
Diameter: 41 mm
Thickness: 9.15 mm
Sapphire crystal caseback
Water-resistance: 20 m
Dial:Tuscany blue dial with white gold applied hour-markers
White gold hour and minute hands
Strap:“Large square-scale” hand-sewn alligator leather with platinum AP folding clasp
Functions:Hours and minutes
Day
Date
Month
Leap-year indication
Moon phases

Musée Audemars Piguet - Quantième perpétuel automatique, 1978
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