- Movement
- Hand-wound
- Size
- 50 mm
Overview
A dragon coiled around a fixed movement
The Jacob & Co. Astronomia Dragon, reference AT802.50.DR.UB.A, in an 18-carat yellow gold case with sapphire side panes, 50 mm across and 25 mm high. Its openworked titanium dial sits off-centre, with baguette-cut white diamonds on the base, lugs and clasp, on a blue alligator leather strap. This version is a pièce unique.
The case is 18-carat yellow gold with an 18-carat white gold caseback, and the crafted dragon is hand-painted green.
Jacob & Co. built the Astronomia as a vertical, rotating movement. For the Dragon it fixed that movement in place, which leaves room for a large three-dimensional dragon between the four satellite arms. Like every Astronomia, it models a solar system: the Earth is a magnesium globe and the moon is a white diamond. The dragon is coiled around the movement and is made and finished by hand.
Hand-wound calibre JCAM25 is the non-spinning version of the Astronomia calibre. It has 384 components and a 60-hour power reserve. The double-axis tourbillon hangs from one arm in an openworked carriage with a single attachment point, which makes it a flying tourbillon.
Key details
Design and engineering
- TourbillonDouble axis: the first axis turns in 60 seconds and the second in 5 minutes.
- MoonA white Jacob-cut diamond of 1 ct and 288 facets, turning on its own axis in 30 seconds.
- Earth globeMagnesium, turning on its own axis in 30 seconds.
- DialTitanium and openworked, with blued hands.
- Dragon18-carat rose gold, hand-cast, hand-polished and hand-painted green, with ruby eyes.
- Gem-setting: diamond base202 baguette-cut white diamonds (≈8.32 ct).
- Gem-setting: lugs80 baguette-cut white diamonds.
- Gem-setting: clasp18 baguette-cut white diamonds (≈1.4 ct) on an 18-carat yellow gold and titanium deployant clasp.
- Case18-carat yellow gold with sapphire side panes, a curved anti-reflective sapphire crystal and an 18-carat white gold caseback. Water resistant to 30 m.
Calibre JCAM25
- Hand-wound
- 384 components
- 60-hour power reserve
- 21,600 vph (3 Hz)
- Double-axis tourbillon
The reference
Technical specifications
| Reference | AT802.50.DR.UB.A |
|---|---|
| Collection | Astronomia |
| Calibre | JCAM25 |
| Movement | Hand-wound |
| Functions | Double-axis Tourbillon 1st Axis: Rotation in 60 Seconds; 2nd Axis: Rotation in 5 Minutes; Off-centered Hour and Minute Dial; Rotating, 1 ct, 288-facet, Jacob-Cut White Diamond: Rotation in 30 Seconds; Rotating Magnesium Earth Globe: Rotation in 30 Seconds |
| Power reserve | 60 hours |
| Frequency | 21,600 vph (3 Hz) |
| Components | 384 |
| Case dimensions | 50 mm |
| Case height | 25 mm |
| Case material | 18-carat yellow gold and sapphire side panes |
| Crystal | Curved Anti-Reflective Sapphire Crystal |
| Case back | 18-carat White Gold |
| Water resistance | 30 m (3 atm) |
| Gem-setting: Diamond base | Set with 202 Baguette White Diamonds (≈8.32 ct.) |
| Gem-setting: Lugs | Set with 80 Baguette White Diamonds (≈8.37 ct.) |
| Gem-setting: Clasp | Set with 18 Baguette White Diamonds (≈1.4 ct.) |
| Dial | Titanium, Openworked Hour and Minute Dial |
| Hands | Blued, Exclusive Jacob & Co. Shape |
| Strap | Blue alligator leather |
| Clasp | 18-carat Yellow Gold and Titanium Deployant Clasp |
| Limited edition | Pièce unique |
| Crafted miniature | 18-carat Rose Gold, Hand-cast, Hand-polished, Hand-painted Green with Ruby Eyes |
Buying with HYPA
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- Free insured delivery within Australia · international quoted
- Payment by bank transfer
- Registered Australian dealerHYPA International Pty Ltd · Registered Victorian second-hand dealer, Registration No. SHD-0018017.
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