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 sche