MX Factory Edition — Leather Deployant Strap
The MX Factory execution of the Vacheron Constantin Fiftysix Complete Calendar 4000E/000R-B438 represents a highly specific technical compromise favored by the replica community. By prioritizing the correct dial layout and case thickness, MX Factory utilized a heavily modified Miyota 9015 base, resulting in accurate sub-dial spacing at the expense of automated month advancement.
Powering this reference is the aforementioned Miyota 9015 base caliber, operating at 28,800 vibrations per hour. The movement architecture features functional day, date, and moonphase complications adjusted via recessed case flank pushers, delivering approximately 36 hours of power reserve. Notably, the month indicator is unlinked from the date wheel and requires manual advancement.
The case is constructed from 316L stainless steel with a pink gold PVD coating, measuring 40mm in diameter to match the genuine profile. The silver white dial is protected by an authentic vintage-style box-shaped high-domed sapphire crystal, which accurately distorts the peripheral track at low viewing angles.
- Movement: Modified Miyota 9015 Base — Approximately 36 hours
- Case Material: Pink Gold Plated 316L Stainless Steel, 40mm diameter
- Bezel: Smooth Pink Gold Plated, fixed
- Crystal: Box-Shaped High-Domed Sapphire with colorless AR coating
- Strap: Leather with deployant Maltese cross clasp
- Water Resistance: 30m stated rating — professional pressure test recommended before swimming
This piece appeals to collectors who require the visual complexity of the Fiftysix Complete Calendar and are willing to accept manual month adjustment in exchange for an accurate case profile and dial layout.

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