The watch, reference 1573-666 is from 1967 and it is equiped with a A. Schild/Felsa 4004 automatic movement. Mind the odd "lying 30" on the bezel ..... Cheers, HSTE
The > Tissot Research Idea 2001 (with the astrolon movement), which established the "DNA" for ..... > the first series Swatch, the ref. GB101 (mind the "Quartz" print on the dial which disappeared soon after the first series) Cheers,, HSTE