JACOB & CO. ASTRONOMIA TOURBILLON FIVE MINUTE LIMITED EDITION 50MM

REFERENCE : AT810.40.BD.BD.A
Brand:Jacob & Co.
Model:
Reference: AT810.40.BD.BD.A

Description

Limited edition of 9 pieces.

Case:
Diameter: 50 mm.
Thickness: 25 mm.
Material: 18k rose gold.
120 baguettes white diamonds invisibly set ( 9.13 cts. ).
Sapphire apertures on sides.
Case back: 18k rose gold.
Bows: winding and time-setting via 18k rose gold lift-out rotating “bows” at case back.
Diamond layer front case: 18k rose gold.
257 baguette diamonds invisibly set ( 8.27 cts. ).
Crystal: unique domed sapphire with anti-reflective treatment.
Water resistance: 30 meters.

Dial and hands:
Titanium dial, hand-angled and polished, engraved and lacquered indexes.
Blued Jacob & Co. designed hands.

Movement:
Calibre exclusive Jacob & Co. manual winding JCAM40.
Diameter: 41.75 mm.
Height: 17.15 mm.
Components: 339.
Power reserve: 35 hours.
Frequency: 21’600 vib/h (3 Hz).
Jewels: 42.
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 (patented differential gears system allows to keep the 12/6 o’clock position).
Tourbillon cage rotating :
1st axis: in 60 sec.
2nd axis: in 1min 15 sec.
Full revolution around central axis in 5 minutes.
288 facets spherical exclusive Jacob cut diamond (1 ct. ) rotating on itself in 15 sec.
Magnesium lacquered globe rotating on itself in 15 sec

Strap and clasp:
Alligator leather.
18k rose gold folding buckle invisibly set with 18 baguettes white diamonds. (~1.4 ct. ).

Brand

Jacob & Co.

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