Felsa 240

Update

Basic Information

NameFelsa 240
ManufacturerFelsa
Launch Year1935
Caliber FamilyDescription
71: sub second
86: sweep second
100: sub second, date
131: sub second, 11"

Related calibers
Felsa 100, Felsa 131, Felsa 136, Felsa 138, Felsa 144, Felsa 166, Felsa 167, Felsa 203, Felsa 205, Felsa 216, Felsa 219, Felsa 240, Felsa 244, Felsa 255, Felsa 268, Felsa 284, Felsa 285, Felsa 286, Felsa 287, Felsa 326, Felsa 327, Felsa 71, Felsa 73, Felsa 75, Felsa 76, Felsa 77, Felsa 78, Felsa 79, Felsa 80, Felsa 86, Felsa 88, Felsa 89
Is COSC certifiedNo

Technical Details

Lignes Dimensions10.5 ‴
Dimensions23.69 mm
Height(not set)
Further MeasuresMounting Diameter (Dm): 23.3mm
Power Reserve(not set)
Frequency18,000 vph
Jewels17

Complications and Specifications

ShapeRound
Complications
  • Sub Second
  • Chronograph Stopwatch
Regulator TypePinned Regulator (or Index Regulator)
Movement TypeManual
Escapement TypeSwiss Lever
Control TypeBalance Wheel
Winding TypeStem Winding (Crown)
Setting TypeStem Set (Crown Pull)

Additional Information

Hand Sizes1.40 x 0.80mm
Hand Count3
Country Of ManufactureSwitzerland
NotesRemarks: bimetallic screw balance
differences not known between 71, 73, 75-80, 144, 166, 167, 203, 205, 216, 219, 240, 244, 255, 268, 284, 286, 287, 326
Other data: balance staff: U591 stem: W193 mainspring / battery: Zf1389, 1.70 x 9.0 x 0.10 x 290mm balance staff ronda: 983 (10,5) stem ronda: 115 (10,5) Other data: balance staff ronda: 983 (10,5) Mainspring: 1.700 x 9.000 x 0.095 x 320.000 mm
Ranfft mentioned about this caliber: There are variants with this quantity of jewels 15, 17
Signatureca. 1935: 119017, Gothic Watch Co New York, Jar-Proof, Adjusted to Temperature, Patent + No.102795, Made in Switzerland, 17 Jewels - 212498, Pat'd (Felsa 71)

Metadata

Created AtSep 15, 2023
Updated AtApr 23, 2025, 11:32:29 PM