Have been looking for a 2577 for some time, especially the Chronometer Certified version. Took a change and bought this one on some not so detailed pictures. Seem to be an ok condition, runs strong with a good ampitude. Have some patina on the dial but is not so visible because of the black dial. 2577-18 SC Cal. 354 1952 Best Thomas
Swiss Made, my watchmaker said that the rust around the index markers is not new, it has taken some years to come to this state. Best Thomas