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Felsa 90

 

Felsa 90Felsa 90

Description

The Felsa 90 described here is one of the latest cylinder movements of a ladies' watch and was probably made in the 1940ies or even 1950ies. Its measured size is 19.6 x 12.6 x 4mm (= 8 3/4 x 5 1/2 lignes, although it was listed in the Flume K1 with 5 1/4 lignes) and it contains 10 jewels.

minimally modified versionminimally modified version

As you can see on the details, this movement was a bit reworked during the production time frame.

Felsa 90 dial sideFelsa 90 dial side

dial side, different versiondial side, different version 

 

 

 Technical data

ManufacturerFelsa
Caliber90
Number of jewels10
Escapementcylinder
BalanceNickel
Shock protection(s)none
Balance cock directioncounterclockwise
Hairspring studfixed
Regulator typeLong regulator arm
Movement constructionEscapement wheel
Fourth wheel, Third wheel, Center wheel
Mainspring barrel
Winding mechanismRocking bar
Setting lever spring3 holes
FunctionsHour, minute
Beats per hour18000
Size51/4''' (measured: 19,6 x 12,6 mm)
Image in Flume Werksucher 1947 46
Felsa 90FelsaFelsa905 1/4'''Felsa 9010 Jewels, 5 1/4''', 18000 A/h
Factsheet

 

 

Usage gallery

Ecly ladies' watchEcly ladies' watchOrmo ladies' watchOrmo ladies' watchKasta ladies' watch  (dial only)Kasta ladies' watch (dial only)Gam ladies' watchGam ladies' watch

 

 

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