Tissot Caliber 784-2

Brand	Tissot, Chs Tissot & Fils
Caliber Number	784-2
Movement Type	Automatic, self-winding mechanical
Lignes	11.5”’
Diameter	26mm
Height	5.2mm
Jewel Count	21
Beat Rate	18,000 vph
Lift Angle	52 degrees
Power Reserve	~45 hours
Anti-Shock Device	Incabloc
Hand Count	3
Hand Sizes	1.5mm / 1.2mm / .21mm
Functions	Central hours; central minutes; central sweeping seconds; date at 3:00
Quickset Date?	No
Country of Manufacture	Switzerland, Swiss made
Known Models	Vintage Tissot Seastar, Seastar Seven (Add your watch to the comments below…)

The Tissot caliber 784-2 is a vintage automatic watch movement from the late 1960s to early 1970s (circa 1968~1972?).

This movement is not equipped with a quickset date, however, you can advance the datewheel by moving the hands from around 8PM to past 12AM, then back to 8PM to 12AM, and so on.

Video: Restoring a Tissot Seastar Cal 784-2

Additional Resources:

• Tissot calibre 784-1