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Description
8F Factory Vacheron Constantin Overseas Perpetual Calendar 4300V Rose Gold
A pragmatic approach to a grand complication, prioritizing functional reliability over 1:1 case thickness.
Powered by Modified Miyota 9015 (Caliber 1120 QP)
Replicating the ultra-thin Vacheron Constantin Caliber 1120 QP is an inherent engineering challenge. Rather than attempting a fragile bespoke clone, 8F Factory utilizes the proven Miyota 9015 as a base tractor movement. A complex custom module plate is mounted atop the base caliber to drive the sub-dials. While this modular architecture increases the overall height, it ensures that the day, date, month, and moonphase complications function mechanically rather than being faux indicators.
The Miyota 9015 base is typically regulated to ±10–15 seconds per day. The unidirectional winding rotor may exhibit the characteristic audible spin inherent to Miyota architectures.
- ✅ Power Reserve: Approximately 36 hours
- ✅ Complications: Month, Date, Day, and functional Moonphase at 6 o’clock
- ✅ Winding Direction: Unidirectional (clockwise)
Technical Specifications
Weighing 164g, the case construction relies on heavily plated 316L stainless steel. The modular movement demands a 12.0mm thickness, sacrificing the ultra-thin profile of the genuine article.
Features a silver dial with recessed sub-dials. The moonphase disc at six o’clock is functional, tracking the lunar cycle with gold-tone stars against a dark background.
The iconic six-sided bezel is mirror-polished, providing a sharp contrast to the vertically brushed flat surfaces of the primary case body.
The integrated bracelet links feature accurate alternating brushed and polished finishing, secured by a double-deployant butterfly clasp.
Why 8F Factory for This Reference?
Many collectors ask: “Why not XF or BBR?”
While XF excels at the time-only Overseas 2000V and BBR focuses on tourbillon variants, 8F is currently the dominant factory offering a fully functional multi-subdial layout for the 4300V. By opting for a Miyota base, 8F ensures the complex calendar module operates reliably, avoiding the high failure rates associated with bespoke grand complication clone movements.
Full Disclosure: The 12.0mm case thickness is a significant deviation from the genuine 8.1mm profile. Furthermore, the reference 220R-B064 technically corresponds to an ocean blue dial, whereas this specific batch is fitted with a silver dial.
LIVE PREVIEW
Data Sheet
| MODEL REFERENCE | 4300V/220R-B064 |
| FACTORY / VERSION | 8F Factory Edition |
| MOVEMENT | Modified Miyota 9015 (Caliber 1120 QP Module) |
| CASE MATERIAL | 18K Rose Gold Plated 316L Steel |
| WEIGHT & THICKNESS | 164 g | 12.0 mm |
| CRYSTAL & LUME | Sapphire with AR Coating | Standard Super-LumiNova |
| DIMENSIONS | 41.5 mm × 49.0 mm × 12.0 mmManual measurements — minor tolerances apply. |
| WATER RESISTANCE | Stated 30m — professional pressure test recommended before swimming |
Collector Q&A
Q: Does the perpetual calendar function automatically adjust for leap years?
A: No. While the day, date, month, and moonphase are fully functional via the modified Miyota 9015 module, it is a standard calendar mechanism, not a true mechanical perpetual calendar. It requires manual advancement at the end of months with fewer than 31 days.
Q: Why is the case thickness 12.0mm when the genuine 4300V is 8.1mm?
A: The 8F Factory utilizes a reliable Miyota 9015 base movement with a custom calendar module plate stacked on top. This modular architecture adds significant vertical height, resulting in the 12.0mm profile in exchange for mechanical reliability.
Q: Is the moonphase at 6 o’clock functional or just a day/night indicator?
A: The moonphase complication on this 8F edition is fully functional and tracks the lunar cycle, rather than operating as a simple 24-hour day/night indicator often found on lower-tier replicas.
Q: What is the most notable inaccuracy of this specific replica batch?
A: Beyond the increased case thickness, this specific 8F model features a silver dial, whereas the genuine reference 4300V/220R-B064 is associated with an ocean blue dial. Additionally, the rose gold plating requires careful maintenance to avoid accelerated wear on the integrated bracelet links.
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