Saw this SEIKO mechanical watch [5328-0010] 17J Rare Swiss movement on the ebay.
So is it a Swiss or Seiko watch ? Interesting !
edit : from checking, it seems in 1975, Seiko was using CHEAP swiss movements! It does not seems to be a fake as there was a Seiko stamping on the movement. Hattori Co. [Seiko] did use Swiss movements in their early days, right on up to the ’50s. There is a Suwa logo on the dial so 1985 may makes the most sense.