Sonceboz ES 55

watch, watches, wristwatch, wristwatches, caliber, Switzerland

Sonceboz ES 55
Sonceboz ES 55

Description

The diameter is 11 1/4 lignes and it beats with 21600 A/h. The balance runs in two shock protection systems with three legs; on the movement side with a jewel, on the dial side only with a steel plate. The balance drives a pin lever, the center second hand is directly driven while the cannon pinion is driven indirectly by the mainspring barrel.

dial side view
dial side view

Technical data

ManufacturerSonceboz
CaliberES 55
Number of jewels1
Escapementpin lever
BalanceNickel
Shock protection(s)Brac Dip Resomatic
Balance cock directionclockwise
Hairspring studmoveable
Regulator typeHairspring key
Movement constructionFork
Escapement wheel, Fourth wheel, Third wheel, Large driving wheel
Mainspring barrel
Winding mechanismyoke
Setting lever spring1 holes
FeaturesSCD
FunctionsHour, minute, second
Beats per hour21600
Size113/4'''
Production time1978 - ?
Factsheet

Usage gallery