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FEF 300

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FEF 300 caliber

FEF 300 caliber

Basic Information

Name	FEF 300
Manufacturer	Fabrique d'Ébauches de Fleurier
Launch Year	1945
Caliber Family	Description 290: 10.5" , sub second 290-1, 330: 10.5" , sweep second 310: 11.5" , sub second 310-1, 340: 11.5" , sweep second Related calibers FEF 290, FEF 290-1, FEF 291, FEF 291-1, FEF 292, FEF 292-1, FEF 293, FEF 293-1, FEF 294, FEF 294-1, FEF 295, FEF 295-1, FEF 296, FEF 296-1, FEF 297, FEF 297-1, FEF 298, FEF 298-1, FEF 299, FEF 299-1, FEF 300, FEF 300-1, FEF 301, FEF 301-1, FEF 302, FEF 302-1, FEF 303, FEF 303-1, FEF 304, FEF 304-1, FEF 305, FEF 305-1, FEF 306, FEF 306-1, FEF 307, FEF 307-1, FEF 308, FEF 308-1, FEF 309, FEF 309-1, FEF 310, FEF 310-1, FEF 311, FEF 311-1, FEF 312, FEF 312-1, FEF 313, FEF 313-1, FEF 314, FEF 314-1, FEF 315, FEF 315-1, FEF 316, FEF 316-1, FEF 317, FEF 317-1, FEF 318, FEF 318-1, FEF 319, FEF 319-1, FEF 320, FEF 320-1, FEF 321, FEF 321-1, FEF 322, FEF 322-1, FEF 323, FEF 323-1, FEF 324, FEF 324-1, FEF 325, FEF 325-1, FEF 326, FEF 326-1, FEF 327, FEF 327-1, FEF 328, FEF 328-1, FEF 329, FEF 329-1, FEF 330, FEF 340
Is COSC certified	No

Technical Details

Lignes Dimensions	10.5 ‴
Dimensions	23.69 mm
Height	3.55 mm
Further Measures	Mounting Diameter (Dm): 23.3mm
Power Reserve	50 hours
Frequency	18,000 vph
Jewels	15

Complications and Specifications

Shape	Round
Complications	Sub Second Perpetual Calendar
Shock Protection	Incabloc
Regulator Type	Pinned Regulator (or Index Regulator)
Movement Type	Manual
Escapement Type	Swiss Lever
Control Type	Balance Wheel
Winding Type	Stem Winding (Crown)
Setting Type	Stem Set (Crown Pull)

Additional Information

Hand Sizes	1.30 x 0.60 / 0.21mm
Hand Count	3
Country Of Manufacture	Switzerland
Notes	Remarks: differences not known between 290...309 Other data: balance staff: U819 / U3101 balance with/without screws stem: W879 mainspring / battery: Zf1211, 1.50 x 9.0 x 0.10 x 290mm balance staff ronda: 949 (10,5) stem ronda: 24 (10,5)
Signature	ca. 1945: Swiss Made, 15 Jewels; Incabloc (FEF 310, 11.5" )

Metadata

Created At	Sep 15, 2023
Updated At	Jan 28, 2024, 8:58:34 PM