American Horologist and Jeweler July 1967 (Dealing With Eterna-Matic Self-Winding Mechanisms, Accurate Diamond Grading Possible With GIA Instrument, Old Jewelry)
$2,750.00
Eterna Men's 1240.41.43.0219 Automatic Kontiki Chronograph Watch
$3,510.00
Eterna Men's 1240.41.63.0219 Kontiki Stainless steel Chronograph Watch
American Horologist and Jeweler September 1957: Eterna-Matic the First Self Winding Watch, Elimination of Stubborn Magnetism