This Eterna is in really good condition, but not preforming like it should and could do with a service.
Movement is in very good condition.
Low amplitude together with a big beat error.
The setting lever spring has broken and there is quite a bit of dirt.
Once you start taking the movement apart you find the dirt.
Old mainspring.
Movement has been cleaned and I can see that the balance moves freely after fitting the balance jewels.
Mainspring goes into the barrel.
Here you can see the gear train layout before fitting the train bridge.
Gear train back in place moving freely.
Setting/winding mechanism back in place with a new setting lever spring.
Movement back together and ticking.
I’m happy with the performance.
Movement ready for dial and hands.
Dial and hands are in excellent original condition.
Watch even has the original Eterna crystal with 5 ball logo in centre.
Simply elegant!