Minerva 19/3

	Brand:	Minerva
	Family:	Unknown
	Height:	5.45 mm
	Jewels:	15
	Reserve:	hours
	Frequency:	18,000 A/h
	Winding:	Hand winding
	Diameter:	42.15 mm (19 ligne)
	Complications:
	Hands:	Central Hour Hand, Central Minute Hand

Distinguishing Technical Characteristics
Hand-Winding Clockwise Balance Cock Balance at 12:00 Barrel at 7:30
Production:  –
1910s	1920s	1930s	1940s	1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s

Cal. 3 is a stem winding and setting open-faced pocket watch movement produced by Robert Frères (later called Minerva) from the early 1900s through the 1940s. It was their first stem-set movement and marked a significant advance for them.

Cal. 3 spawned a range of related pocket watch movements:

Ranfft Pink Pages