JACOB & CO. ASTRONOMIA TOURBILLON LIMITED EDITION 50MM

REFERENCE : AT100.30.AC.SD.A
Brand: Jacob & Co.
Model:
Reference: AT100.30.AC.SD.A

Description

 

Limited edition of 18 pieces.

Movement:
Exclusive Jacob & Co. manual winding calibre JCAM10.
Diameter: 40 mm.
Height: 17.15 mm.
Components: 365.
Material: Titanium.
Power reserve: 60 hours.
Frequency: 21’600 vib/h (3 Hz).
Jewels: 42.
System: Triple axis gravitational tourbillon.
Finishing: plate and bridges: hand-angled and polished, flank draw, circular graining, polished sink.
Polished screws.
Barrel: circular graining.
Pinions: conical pinions.
4 mechanical ball-bearing devices.
Flat balance spring.

Functions:
Hours, minutes dial rotating in 10 min on the central axis, patented differential gears system.
Faceted spherical diamond rotating in 30 sec on 2 axes (weight: 1 carat).
288 patented facets exclusive Jacob cut.
Magnesium lacquered globe rotating in 30 sec on 2 axes.
Gravitational tourbillion cage rotating on 3 axes: 1st axis: in 60 sec, 2nd axis: in 2.5 min, 3rd axis: central axe in 10min.

Case:
Diameter: 50 mm
Thickness: 25 mm.
Material: 18k white gold.
Sapphire apertures on sides.
Case back: 18k white gold.
Bows: winding and time-setting via 18k white gold lift-out rotating “bows” at case back.
Skylayer front case: aventurine and 18k rose gold.
Crystal: unique domed sapphire with anti-reflective treatment.
Water resistance: 30 meters (ISO 2281).

Dial:
Magnesium dial, hand-angled and polished, lacquered indexes.
Hand-finished gun blue.

Strap and buckle:
Alligator.
18k white gold folding buckle.

Brand

Jacob & Co.

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