F.P. Journe Octa

F.P. Journe Octa Automatique Lune Nacre Edition.  Limited edition, rare piece.  Perfect condition watch purchased new from AD complete with box and papers. 

THIS MODEL WAS PRODUCED BETWEEN 2008 AND 2017.

THE BOUTIQUE NACRE COLLECTION ELEGANTLY COMBINES THE MYSTERIES OF MOTHER OF PEARL IN AN HOUR CIRCLE ADORNED WITH ARABIC NUMERALS, WITH THE TIMELESS ELEGANCE OF A GUILLOCHE CLOUS DE PARIS IN ITS CENTRE.

TECHNICAL DESCRIPTION

(1) 22K Gold rotor with uni-directional winding

(2) Large capacity mainspring barrel

(3) Precision-adjustment weights

(4) Full-size free-sprung chronometer balance

Watches with long power reserves have hitherto been handicapped by small balances which are susceptible to shocks and disturbances. The Octa's compact construction allows a large (10.1 mm) balance to be fitted, giving greater inertia and stability. The free-sprung chronometer balance is adjusted by five turning weights that vibrate at a steady 21'600 times an hour.

Fully wound, the Octa delivers chronometric precision for 120 hours. The meter-long mainspring supplies an average 850gr of torque, limiting the loss in balance amplitude to 25% over the five-day period. Beyond that time, the watch will continue to go for another day or two, but the amplitude-loss no longer guarantees precision timekeeping.

INDICATIONS :

Centre hours and minutes

Small seconds at 4:30

Large date

Power-reserve indicator at 9h00

Moon phase

DIMENSIONS :

Overall diameter : 30.80 mm

Casing-up diameter : 30.40 mm

Overall height : 5.70 mm

Height of winding stem : 3.00 mm

Diameter of stem thread : S0.90 mm

Case Diameter : 40.00 mm

Overall Thickness : 10.6 mm

CHARACTERISTICS :    

In-line lever escapement, 15-tooth wheel

Balance with 4 inertia weights

Flat Anachron microflamed spring

Mobile stud holder

Free-sprung balance

Virolage laser Nivatronic

Pinned GE stud

Three-position crown Slipping mainspring

Off-centre winding rotor

WINDING SPEED :      

on rotator:

274 clockwise revolutions/24 hours (without mainspring slipping)

CHARACTERISTICS :    

Uni-directional automatic winding

Date setting by turning crown in opposite ways (position 2)

Time setting with crown in position 3

Instantaneous date change

FREQUENCY : 

21'600 Alt/h, (3Hz)

BALANCE :      

Inertia: 10.10 mgcm2

Angle of lift: 52°

AMPLITUDE :  

12 h dial up : 280°

90 h dial up : 220°

AUTONOMY : 

160 ± 10 hours

NUMBER OF JEWELS :

36

FINISH :          

High grade

Circular stripes on the bridges

Baseplate partly circular grained

Gilt engravings

Polished screw heads with chamfered slots

Pegs with polished rounded ends

Steelwork with polished chamfers

NUMBER OF PARTS :  

Movement 273

Cased up with strap 310