PF331 Family

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BRANDS: Parmigiani Fleurier

Production: 2001 – Current
1910s	1920s	1930s	1940s	1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s

Cal. PF331 was the first fully in-house watch movement for Parmigiani Fleurier. Introduced in 2001, it has become the base for a range of automatic movements from the company. It features two mainspring barrels in series for 50 hours of power reserve. It has uni-directional automatic winding in the clockwise direction.

Viewed from the back with the crown at 9:00, the balance is placed at 8:00 on a clockwise cock. The central winding rotor is held with three screws and has seven ball bearings visible.

Hermès P1928 and H1837

In 2006, Hermès invested in 25% ownership of Vaucher Manufacture, along with Parmigiani. The company initially produced a version of Cal. PF331 for Hermès called P1928.

In 2017, these were updated with distinctive bridges and other customization and renamed Cal. H1837. Both Cal. PF331 and Cal. PF332 were used by Hermès, both named Cal. H1837.

Calibre	Start Year	End Year	Diameter (mm)	Diameter (ligne)	Height (mm)	Complications
PF315		Current	28.00	12.5	6.10	2-Button, Chronograph, Date
PF317	2017	Current	35.60	15.75	5.40	24 Hour Hand, Date, Date by Pointer, Day/Night Indicator, GMT Hand, Independently-Adjustable 12 Hour Hand, Retrograde Date
PF331	2001	Current	25.60	11.5	3.50	Date
PF333	2002	Current	27.00	12	5.50	Date, Day, Leap Year, Month, Moon Phase, Perpetual Calendar, Retrograde Date
PF334	2007	Current	30.30	13.25	6.80	2-Button, Chronograph, Column Wheel Chronograph, Date, Quick Date Correction
PF335	2010	Current	30.30	13.25	6.80	2-Button, Chronograph, Date, Flyback Chronograph, Modular Chronograph
PF337	2010	Current	35.60	15.75	5.10	24 Hour Hand, Date, Day/Night Indicator, GMT Hand, Independently-Adjustable 12 Hour Hand
PF339	2012	Current	27.10	12	5.50	Annual Calendar, Date, Day, Day by Pointer, Month, Month by Pointer, Moon Phase, Retrograde Date
PF441	2017	Current	25.60	11.5	3.70	Date