ETA 2390

 
ETA 2390

ETA 2390

Description

ETA 2390 with nickel screw balance

ETA 2390 with nickel screw balance

Technical data

Manufacturer:ETA
Caliber:2390
Number of jewels:17
Escapement:Pallet lever
Balance types: Glucydur screw balance
Nickel screw balance
Shock protection(s): Incabloc
Balance bearing / direction hairspring:Clockwise
Moveable stud:no
Adjust mechanism:Long regulator arm
Construction:
  • lever
  • escape wheel, seconds wheel, third wheel, large driving wheel
  • mainspring barrel
Winding mechanism:yoke winding system
Features:SCD
Functions:hour, minute, second
A/h:18000
Size:10 1/4'''
Literature: Flume: 1957 32

Usage gallery

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