QUANTIÈME PERPÉTUEL

OPTIMUM READABILITY AND SIMPLIFIED USE FOR THE F.P.JOURNE QUANTIÈME PERPÉTUEL WITH INSTANTANEOUS JUMP.

DURING THE 18TH CENTURY THE ASTRONOMICAL WATCHES GRADUALLY GAVE WAY TO THE MANUFACTURING OF WATCHES SHOWING THE DATE AND, USUALLY, THE MOON PHASES. THESE PRIMITIVE CALENDAR WATCHES WERE ALL OF THE SIMPLE CALENDAR TYPE THAT IS TO SAY THAT AT THE END OF EACH MONTH OF LESS THAN 31 DAYS, THE DAYS HAND HAD TO BE PUT FORWARD MANUALLY. ADDING TO THE MOVEMENT THE COMPLICATED MECHANISM OF A PERPETUAL CALENDAR, IN WHICH, EVERY FOUR YEARS, THE 29TH OF FEBRUARY WOULD BE AUTOMATICALLY RECORDED, HAD LONG BEEN THE DREAM OF EVERY WATCHMAKER.

Description

MOVEMENT :

Automatic Calibre FPJ 1300-3 in 18K rose gold (4N)
Unidirectional automatic winding
Off-centre 22K gold guilloché winding rotor
Wind speed: 274 anti-clockwise rotations per 24 hours

DIMENSIONS :
  • Overall dimensions : 33.00 mm
  • Casing-up diameter : 30.40 mm
  • Overall height : 6.20 mm
  • Height of winding system : 1.80 mm
  • Diameter of stem thread : S0.90mm
BALANCE :

Four adjustable inertia weights
Anachron free-sprung flat balance spring
Mobile stud holder
Nivatronic laser soldered balance spring
Pinned GE stud
Three-position winding steam
Barrel with slipping spring

FREQUENCY :

21’600 Alt/h, 3 Hz

INERTIA :

10.10 mg/cm2

ANGLE OF LIFT :

52°

AMPLITUDE :

12 h dial up : 280°
90 h dial up : 220°

AUTONOMY :

160 ± 10 hours

INDICATIONS :

Central hours and minutes
Indication of leap year with centered smal hand, 1,2,3, in black; L for the leap year in red
Day and month at 12 o’clock in 2 apertures
Large date at 6 o’clock in double aperture
Power reserve at 9 o’clock

DECORATION :

Circular graining on 18K Gold baseplate
Circular Côtes de Genève on 18K Gold bridges
Polished screw heads with chamfered slots
Pegs with polished rounded ends
Steel components hand polished and chamfered

CHARACTERISTICS :

Perpetual calendar with instantaneous jump
Unidirectional automatic winding
Simultaneous correction of the date and day in one direction, rotation of the day only in the other direction in position 2 of the winding stem
Discreet and secure corrector in the lug of the watchcase for correction of the month and leap year

Brand

FP Journe

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