i am planning to buy a new vintage zenith watch but i couldn't identify the model. the seller also doesn't know about the model. he says its size is 29x29 with a lug width of 18mm. the case is gold (20 micron), the movement is manual winding (30.5 mechanism). the model has been made in the 1970s.
i am posting the photos. please feel free to comment/rate/recommend about my watch. what should i pay for this piece?