Beautiful Eterna Kontiki Sonic from 1970, powered by the Eterna 1551 tuning fork movement.
Stainless steel case measures 38mm without the crown (41,5mm including the crown) x 42mm lug to lug.
Tropical turned Kontiki Sonic blue dial, with raised hour markers and lume plots still in place.
Original hour, minutes and seconds hands. Day/date at 3.
Original screw down crown.
Screw down case back with a few surface scratches here and there from time, but with a nice medallion and serial still visible.
Caliber 1551 (ESA 9164) works great, date and day change flawlessly.

The watch comes with a new high quality Diaboliq canvas/leather strap and it will be delivered inside one of our own leather rolls.

One year warranty on the movement comes with this Eterna as with all of my watches.