Eterna 629

[rogart63]

Need to find a new balance cook and a new balance for a Eterna. Says 692 on the movement.Someone has glued the balance spring and the adjustment to the balance cook  But can't find anything on Eterna 629? 

Why can't something be easy? 

Found this .that says Eterna 629. Unfortunately it's not available  anymore.  

Edited November 26, 2017 by rogart63

[rogart63]

Other side. Doesn't look 100% the same but sure is the same movement. 

 

[rogart63]

Even the hair spring was glued  Or  what can i say more then  . Fantastic repairs sometimes.  

[rogart63]

Is this cock universal? And could be find on some other movements . Maybe need a new jewel also? But haven't work on a lot of this old styles jewels. 

This is the movement. Can use the cock  but it has a bad repair. 

[rogart63]

How many different balances can there be. If i could find a balance with the right height and a impuls that moves the pallet fork. Has the same frequency as the 692. Think it's 18000 . So the hairspring has the right length . Do you think i can get it to work? In don´t the owner mind if it doesn´t run in Cosc . But could at least go within a minute a day. 

[rogart63]

Is there someone that can offer any  help with this? 

[canthus]

Hi Rogart,  You start with 692 the flip to 629 ??

I believe that Eterna morphed into ETA.  There is an ETA 692 and a 629 movement which may be worth checking out.

Edited November 28, 2017 by canthus

[rogart63]

Great . Found a ETA 905 that look very similar. Will check thanks @canthus

[rogart63]

I found one but not sure it works yet.. As the stud that sit in the balance cook is 0,5 mm and i am not sure what the hole in the bridge is. i didn't have a drill . Put will take a look tomorrow. If the endskake is to large can i move  the upper or lower  jewel? The impulse jewel moved the  pallet fork so that looked okay. But you  never now ? Hairspring to long what do i do then? Would make it 18000 if it has been i an old ETA movement right? 

Edited November 28, 2017 by rogart63