Vacheron Constantin Caliber 1326

Brand	Vacheron Constantin
Caliber Number	1326
In-House?	No (manufacture movement)
Manufacturer	Manufacture Horlogère ValFleurier
Based On	Cartier 1904 MC
Movement Type	Automatic, self-winding mechanical
Lignes	11.25”’
Diameter	26.2mm
Height	4.3mm
Jewel Count	25
Total Components	142
Beat Rate / Frequency	28,800 vph / 4 Hz
Lift Angle	Unconfirmed
Power Reserve	48 hours
Rotor Style	Ball-bearing system, 3 screws
Rotor Winding Direction	Bi-directional
Hand-Windable?	Yes
Crown Winding Direction	Clockwise
Anti-Shock Device	Incabloc
Regulator	ETACHRON (no micro adjustment)
Hand Count	3
Functions	Central hours; central minutes; central sweeping seconds; date at 3:00
Hacking Seconds?	Yes
Quickset Date?	Yes
Finishing	22K gold rotor with skeletonized Maltese cross logo in all models, polished beveling, damaskeening (stripes)
Country of Manufacture	Switzerland, Swiss made
Known Models	Vacheron Constantin FiftySix Self-Winding (Ref: 4600E/000A-B442 steel, 4600E/000A-B487 steel, 4600E/000R-B441 18K 5N pink gold, 4600E/000R-B576 18K 5N pink gold) (Add your watches to the comments below…)

The Vacheron Constantin caliber 1326 is an automatic movement with a date. This movement was introduced at SIHH 2018. As of this post in 2024, the 1326 is still found in the Vacheron Constantin catalog.

The VC 1326 is not an in-house movement. It is produced by Manufacture Horlogère ValFleurier, then finished and assembled by Vacheron Constantin (both are part of the Richemont Group conglomerate of luxury watch brands).

This movement found in what is considered to be an “entry level” Vacheron Constantin calibre found in the FiftySix collection.

The base framework of the cal. 1326 is also used by Cartier (1904 MC) and Piaget (1110P).

Additional Resources:

• Official 1326 user guide (pdf)
• More Vacheron Constantin mentions