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ETA 255.111 among others walkthrough

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Now it is time for me to look at the ETA 255.111, a movement found in a large amount of mid-priced quarts watches from Certina, Tissot, Omega, ETERNA, Longines, Tudor and many others.

Though it goes by many names the original movement can be used as a guide when servicing others in this family.
To save space and not make the thread a mile long I as usual made two PDF files of the Disassembly and Assembly of the movement.

And as usual I urge you to look at the oiling and greasing scheme in the original documents from ETA.






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There were a couple of them and with different cases, the one in the Picture comes from a Tissot Seastar (9kt gold case) and there were some earlie Tissot 1853 with the same movement.
It should say which one you have on the dial.

Edited by HSL

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