This is vintage Tuning Fork Eterna Sonic in total MINT condition in every way. Please look macro images of watch from all angles, nothing is hidden on every watch picture. Watch produced in mid 70s.

All stainless steel case, mineral glass, solid links original bracelet and fantastic deep blue dial which in a live view looks indescribably good..

Movement working perfect.

This is difficult to find and it is even more rarely seen in this condition. My absolute recommendation for this watch.