- Movement
- Hand-wound
- Size
- 44 mm
Overview
A pebble-shaped case over a skeleton movement
The Jacob & Co. Brilliant Skeleton Northern Lights, reference BS431.11.AA.AC.A, in a black PVD steel case, 44 mm across and 12.10 mm high. It has a black mineral crystal dial and a case pavé set with 251 black treated diamonds (≈9.53 ct), on a black satin strap with a black DLC ardillon buckle.
Jacob & Co. launched the Brilliant collection in 2017 as a ladies’ line. The case is round, has no lugs and takes the strap directly, and Jacob & Co. likens its shape to a pebble. The Northern Lights series takes its colours from the lights seen near the polar circle.
Hand-wound calibre JCAM01 was developed for this model and is skeletonised. Components that would normally be solid are hollowed out, so the structure of the movement becomes its decoration, and even the Jacob & Co. logo is part of the design. It has 21 jewels and a 46-hour power reserve.
Key details
Design and engineering
- DialBlack mineral crystal.
- Gem-settingPavé set with 251 black treated diamonds (≈9.53 ct), the crown with 30 black treated diamonds (≈0.37 ct) and the clasp with 42 black treated diamonds (≈0.67 ct).
- FinishingAngled bridges with sand-blasted finishing, angled steel elements with drawn finishing, and an open-worked anthracite movement with rhodium-plated gears.
- CaseSapphire crystal with anti-reflective treatment and an engraved edge on the caseback. Water resistant to 30 m.
Calibre JCAM01
- Hand-wound
- 21 jewels
- 46-hour power reserve
- Skeleton calibre
- Hours and minutes
The reference
Technical specifications
| Reference | BS431.11.AA.AC.A |
|---|---|
| Collection | Brilliant |
| Calibre | JCAM01 |
| Calibre type | Skeleton |
| Movement | Hand-wound |
| Functions | Hours & Minutes |
| Power reserve | 46 hours |
| Jewels | 21 |
| Finishing | Angled Bridges with Sand-blasted Finishing, Angled Steel Elements with Drawn-finishing, Open Worked Anthracite Movement with Rhodium-Plated Gears. |
| Case dimensions | 44 mm |
| Case height | 12.10 mm |
| Case material | Black PVD steel |
| Crystal | Sapphire with Anti-reflective Treatment |
| Case back | Engraved Edge |
| Water resistance | 30 m |
| Gem-setting | Pave set with 251 Black Treated Diamonds (≈9.53 ct.); Crown with 30 Black Treated Diamonds (≈0.37 ct.); Clasp set with 42 Black Treated Diamonds (≈0.67 ct.) |
| Gem-setting: Total carat weight | 323 Round Black Treated Diamonds (≈10.57 ct.). |
| Dial | Black Mineral Crystal Dial |
| Hands | Leaf Hands |
| Strap | Black satin |
| Clasp | Black DLC Ardillon Buckle |
Buying with HYPA
Purchase with confidence
- Warranty card status disclosed for every piece we sell
- 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.
- Direct specialist supportSpeak with the HYPA team before, during and after the purchase.
- Rated 5.0 on Google · 11 reviewsFrom clients of HYPA International on Google. Read the reviews
Continue browsing
