Monday, April 12, 2021

Celebrating 20 Years of the OCTA

With F.P. Journe -
Courtesy of F.P. Journe

Limited to 99 pieces.
Here are the pertinents -

Movement -
F.P.Journe automatic calibre 1300.3 in rhodied Brass Rotor in 22K 5N Gold, off centre and guilloché
Monodirectional winding

Dimensions of the movement -

Overall diameter: 34.60 mm
Casing-up diameter: 30.40 mm
Overall height: 5.95 mm
Height of winding system: 3.10 mm
Diameter of stem thread: S1.20 mm

Balance -
Balance with four adjustable inertia weights Anachron flat balance spring
Mobile stud holder
Nivatronic laser soldered balance spring 
Pinned GE stud
Slipping mainspring
Frequency: 21,600v/h (3Hz)
Inertia: 10.10 mg*cm2
Angle of lift: 52°
Amplitude: 12 h dial up: >280° 90 h dial up: >220°

Main Characteristics -
Mono directional automatic winding 
Instantaneous date change
Three position crown
Correction of the date, position 2, anti-clock wise, Correction of the time, position 3

Escapement - 
Linear lever escapement 15 teeth

Indications - 
Off centre hours – minutes – small second 
Large date in aperture in 2 windows at 11h30
Power reserve at 8h30

Autonomy - 
160 +/-12 hours
Winding speed: 
274 rotations / 24 hours

Finishing - 
Graining on base plate
Circular Côtes de Genève on bridges
Rhodied base plate and bridges
Golden engravings
Polished screw heads with chamfered slots 
Pegs with polished rounded ends
Steel components hand polished and chamfered

Case - 
Platinum PT 950 
Diameter: 40 mm
Height: 10.07 mm

Dial - 
Yellow Gold and Silver
Steel circle fixing the hour dial

Number of parts -

Movement without dial: 260 
Cased up on leather strap: 301 
Jewels: 37

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