JACOB & CO. ASTRONOMIA TOURBILLON BAGUETTE BLUE SAPPHIRE LIMITED EDITION 50MM

REFERENCE : AT800.30.BD.BB.A

Brand: Jacob & Co.
Model: Astronomia
Reference: AT800.30.BD.BB.A

Description

Limited edition of 9 pieces.

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.
Sapphire layer front case: 18k white gold, 257 baguette blue sapphires invisibly set (10.20 cts.).
Lugs: 80 baguettes of white diamonds invisibly set (6.10 cts.).
Crystal: unique domed sapphire with anti-reflective treatment.

Dial and hands:
Titanium dial, polished and angled, lacquered indexes.
Hand finished blue.

Movement:
Manufacture Jacob & co. manual winding JCAM10.
Diameter: 40 mm.
Height: 17.15 mm.
Components: 365.
Power reserve: 60 hours.
Frequency: 21’600 vib/h (3 Hz).
Jewels: 42.
System: gravitational triple axis 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 20 min on the central axis, patented differential gears system.
288 facets spherical diamond rotating in 60 sec on 2 axes (weight: 1 carat exclusive Jacob cut).
Magnesium lacquered globe rotating in 60 sec on 2 axes.
Gravitational tourbillon cage rotating on 3 axes: 1st axis: in 60 sec, 2nd axis: in 5min, 3rd axis: central axe in 20min.

Strap and clasp:
Alligator leather.
18k white gold folding buckle invisibly set with 22 baguette white diamonds (1.40 ct.).

Total carat weight: 257 baguette blue sapphires and 102 baguette white diamonds (7.50 ct.).

Brand

Jacob & Co.

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