Jacob & Co. The Mystery Tourbillon 44MM Amethyst
Movement
Hand-wound
Size
44 mm

Overview

Hours and minutes without hands

The Jacob & Co. Mystery Tourbillon 44MM, reference SN810.30.AB.UB.A, in an 18-carat white gold case, 44 mm across and 21 mm high. Its 18-carat white gold hour and minute rings are set with amethysts and white diamonds, on a white alligator leather strap with an 18-carat white gold folding clasp.

This watch has no hands. Hours and minutes are shown on two concentric rings set with gems, and a pair of pointers marks the time. Jacob & Co. presents the display as a nod to mystery clocks, whose workings seemed to have no visible explanation.

Hand-wound calibre JCAM49 has 460 components and a 30-hour power reserve. Its tourbillon sits at the centre of the watch, has no upper bridge and turns on three axes, in 60, 120 and 120 seconds. Jacob & Co. says the carriage is covered for the first time by a flower-shaped decorative structure that turns with it. This version is a pièce unique.

Key details

Case material18-carat white gold
MovementJCAM49, hand-wound
CollectionThe Mystery Tourbillon

Design and engineering

  • TourbillonCentral, flying, twin, triple-axis tourbillon with differential. The three axes turn in 60, 120 and 120 seconds.
  • CaseSet with white hexagon-cut stones.
  • Tourbillon carriageA 288-facet, Jacob-cut amethyst (0.4 ct) and 9 hexagon-cut white diamonds (0.59 ct).
  • RingsInner ring: 48 amethysts (≈3.52 ct) and 12 white diamond hour markers (≈1.68 ct). Minute ring: 95 amethysts (≈4.82 ct) and 1 white diamond (≈0.11 ct). Hour ring: 107 amethysts (≈4.20 ct) and 1 white diamond (≈0.12 ct).
  • ClaspInvisibly set with 21 amethysts (≈1.03 ct).
  • Crystal and water resistanceCurved anti-reflective sapphire crystal. Water resistant to 10 m.

Calibre JCAM49

  • Hand-wound
  • 460 components
  • 30-hour power reserve
  • 21,600 vph (3 Hz)
  • Central, flying, twin, triple-axis tourbillon with differential

The reference

Technical specifications

The Mystery Tourbillon 44MM
ReferenceSN810.30.AB.UB.A
CollectionThe Mystery Tourbillon
CalibreJCAM49
MovementHand-wound
FunctionsMysterious Hour and Minute Rings; Central, flying, twin, triple-axis tourbillon with differential; 1st Axis: Rotation in 60 Seconds; 2nd Axis: Rotation in 120 Seconds; 3rd Axis: Rotation in 120 Seconds
Power reserve30 hours
Frequency21,600 vph (3 Hz)
Components460
Case dimensions44 mm
Case height21 mm
Case material18-carat white gold
CrystalCurved Anti-Reflective Sapphire Crystal
Case back18-carat White Gold
Water resistance10 m
Gem-setting: Tourbillon carriage1 288-facet, Jacob-cut amethyst (0.4 ct.) & 9 hexagon-cut white diamonds (0.59 ct.)
Gem-setting: Inner ringInvisibly-set with 48 Amethysts (≈3.52 ct.) & 12 White Diamond Hour Markers (≈1.68 ct.)
Gem-setting: Minute ringInvisibly-set with 95 Amethysts (≈4.82 ct.) and 1 White Diamond (≈0.11 ct.)
Gem-setting: Hour ringInvisibly-set with 107 Amethysts (≈4.20 ct.) and 1 White Diamond (≈0.12 ct.)
Gem-setting: ClaspInvisibly-set with 21 Amethysts (≈1.03 ct.)
Dial18-carat White Gold Hour And Minute Rings
StrapWhite alligator leather
Clasp18-carat White Gold Folding Clasp
Limited editionPièce unique

Buying with HYPA

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The Mystery Tourbillon 44MM · Ref. SN810.30.AB.UB.A

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