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Description
MKS Vacheron Constantin Overseas 47040/B01A-9094
An exceptionally well-proportioned tribute to the classic closed-caseback Overseas, defined by its accurate 10mm profile and reliable Miyota-based engine.
Powered by Miyota 9015 Base (Cal. 1226)
The MKS factory utilizes the workhorse Miyota 9015 to achieve the necessary thinness for the 47040 case. Since this reference features a solid, intricately engraved caseback, the focus shifts from movement decoration to absolute dimensional accuracy and reliability. The unidirectional rotor effectively charges the mainspring, maintaining consistent amplitude across its power band.
⏱ Accuracy Profile:
±8–12 s/day (typical for properly regulated Miyota 9015 base calibers).
- ✅ Power Reserve: Approximately 36 hours
- ✅ Complications: Hours, minutes, sweep seconds, and date aperture at 4:30
- ✅ Winding Direction: Unidirectional
Technical Specifications
THE BUILD316L Stainless Steel
42mm diameter with an ultra-slim 10mm profile. The case exhibits the correct brushed flanks with polished chamfers, weighing in at a comfortable 94.4g on the rubber strap.
THE DIALDeep Black
Features a subtle sunburst finish under specific lighting, applied indices with luminous fill, and the distinct date aperture positioned correctly between 4 and 5 o’clock.
THE BEZELSolid Stainless Steel
The iconic eight-sided Maltese cross bezel is machined with sharp definition, contrasting the flat brushed top surfaces against polished recesses.
THE BRACELETPremium Rubber Strap
Molded to fit perfectly against the case without endplay, secured by a well-machined double-folding deployant clasp bearing the Vacheron Constantin cross.
Why MKS for This Reference?
Many collectors ask: “Why not older JJF or other factories?”
MKS currently dominates the 47040 market due to their commitment to the genuine 10mm thickness and superior solid caseback engraving depth. While other factories have historically struggled with the complex geometry of the Maltese cross bezel, MKS achieves a crispness that rivals the genuine article.
Full Disclosure: The Miyota 9015 movement’s unidirectional rotor can occasionally be audible in quiet environments, a known characteristic of this base caliber.
Data Sheet
| MODEL REFERENCE | Overseas 47040/B01A-9094 |
| FACTORY / VERSION | MKS Edition |
| MOVEMENT | Miyota 9015 Base (Cal. 1226) |
| CASE MATERIAL | 316L Stainless Steel |
| WEIGHT & THICKNESS | 94.4g | 10mm |
| CRYSTAL & LUME | Sapphire | Super-LumiNova |
| DIMENSIONS | 42mm × 49mm × 10mmManual measurements — minor tolerances apply. |
| WATER RESISTANCE | 30m stated — professional pressure test recommended before swimming |
Collector Q&A
Q: Does the MKS 47040 have the correct case thickness compared to genuine?
A: Yes, the MKS edition accurately replicates the 10mm case thickness of the genuine Vacheron Constantin 47040. This is achieved by utilizing the slim Miyota 9015 movement inside the closed caseback.
Q: How is the quality of the rubber strap and deployant clasp?
A: The rubber strap is custom-molded to fit flush against the case with zero endplay. The deployant clasp operates smoothly and features the correct Maltese cross cutouts, though it may require a brief break-in period for optimal comfort.
Q: Is the date window font and placement accurate?
A: The date window is correctly positioned at 4:30. While the font is very close to genuine, under macro inspection, the print thickness can appear marginally bolder than the authentic Vacheron Constantin typography.
Q: Is the rotor noise noticeable on this model?
A: Because MKS uses a Miyota 9015 base movement, the unidirectional winding rotor can be slightly audible in very quiet environments. This is a standard characteristic of the movement and does not affect reliability.
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