- Movement
- Self-winding
- Size
- 41 mm
Overview
A retrograde date beside a 122-year moon
The Vacheron Constantin Overseas Moon Phase Retrograde Date, reference 4000V/210A-B911, in stainless steel with a sunburst blue dial and 18K gold moon discs, on the steel bracelet with its triple folding clasp. Self-winding calibre 2460 R31L/2 with retrograde date and precision moon phase; 41 mm, 10.48 mm high, certified to the Hallmark of Geneva.
The reference 4000V/210A-B911 is Vacheron Constantin's Overseas Moon Phase Retrograde Date, in stainless steel, which the brand's page pairs a precision moon phase with a retrograde date display it calls one of the Maison's own signatures. The dial shows two 18K gold moons against a starry sky, with the date read on a retrograde hand rather than through a window, and hour-markers and hands in 18K gold picked out with blue SuperLuminova®. The case is 41 mm across and 10.48 mm high, water-resistant to 50 m, with a transparent sapphire case back and an antimagnetic marking. The dial itself is sunburst satin-finished blue, with a circular satin-finished inner minute track and a velvet-finished outer one.
The self-winding calibre 2460 R31L/2 drives the retrograde date and the moon-phase display alongside the hours, minutes and a balance-stop function: 27.2 mm across, 5.4 mm high, with 275 parts and 27 jewels, running at 28,800 V.P.H. (4 Hz) for a stated 40-hour power reserve. The brand states that the moon display needs correcting only once every 122 years, attributing this to the movement's own construction rather than explaining the mechanism further. The watch is certified to the Hallmark of Geneva, which the brand's own account dates to 1886, when the Republic and Canton of Geneva established it as a mark of sound craftsmanship, reliability and provenance. The steel bracelet is closed by a matching triple folding clasp, and the watch ships with two further straps in dark blue leather and dark blue rubber, using a further triple folding clasp named as the third accessory in the specification table.
For collectors
The retrograde date and the moon-phase display share the dial without either needing an aperture -- the date sweeps back across a scale on a hand, and the moon runs on a 122-year correction interval the brand states outright, an unusually long span for a moon-phase mechanism.
Key details
Design and engineering
- Case and dialStainless steel case with a sunburst satin-finished blue dial, a circular satin-finished inner minute track and a velvet-finished outer one; hour-markers and hands are 18K gold, picked out in blue SuperLuminova®.
- Moon phase and retrograde dateTwo 18K gold moons are set against a starry sky for the moon-phase display, and the date is read on a retrograde hand rather than through an aperture; the brand states the moon display needs correcting only once every 122 years.
- CertificationCertified to the Hallmark of Geneva.
- Interchangeable strapsThe steel bracelet, closed by its own steel triple folding clasp, can be swapped for the dark blue grained calfskin leather or dark blue rubber strap supplied with the watch, using a further triple folding clasp named as the third accessory in the specification table.
- Water resistanceWater-resistant to 50 m (5 bar), with the case back separately carrying its own antimagnetic marking.
Calibre 2460 R31L/2
- Self-winding
- Hours, minutes, retrograde hand-type date, precision moon phase, balance-stop
- 27.2 mm across, 5.4 mm high; 275 parts, 27 jewels
- 28,800 V.P.H. (4 Hz)
- Power reserve 40 hours
- Hallmark of Geneva
Specifications
Technical specifications
| Reference | 4000V/210A-B911 |
|---|---|
| Collection | Overseas |
| Calibre | Calibre 2460 R31L/2 |
| Movement | Self-winding |
| Functions | Hours, Minutes, Retrograde hand-type date, Precision moon phase, Balance-stop |
| Case dimensions | 41 mm |
| Case thickness | 10.48 mm |
| Case material | Stainless steel |
| Case back | Transparent sapphire crystal caseback |
| Antimagnetic | Yes — “Antimagnetic” marking on the case back |
| Water resistance | 5 bar (50 m) |
| Dial | Sunburst satin-finished lacquered blue dial with circular satin-finished internal minutes track and velvet-finished external minutes track. 18K gold moons with a starry sky. Retrograde hand-type date. 18K gold applied hour/minute hands and hour-markers highlighted with blue SuperLuminova®. |
| Bracelet | Stainless steel, polished and satin-finished |
| Interchangeable strap | Yes |
| Additional straps | Grained calfskin leather (Dark blue), Rubber (Dark blue), Triple folding clasp |
| Clasp | Stainless steel triple folding clasp |
| Movement dimensions | 27.2 mm × 5.4 mm |
| Components | 275 |
| Jewels | 27 |
| Power reserve | 40 hours |
| Frequency | 28,800 vph (4 Hz) |
| Certification | Hallmark of Geneva |
Buying with HYPA
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