Eterna Sonic electronic
Case ref : 188 T
Case no: 5820280, size ex signed crown 37 x 41 mm.
Calibre : 9162 ESA.The Eterna Sonic of 1970 was the first electronic Eterna watch. The oscillation source was a Tuning Fork so the watch hummed instead of ticking.
For more info see ETERNA-FANTIC.COM click at the left in the menu of Eterna
On Hold for a repeat buyer