OMEGA Electronic f300 Hz, Geneve 198.0021 Montre Hommes Chronomètre Ø Env. 40 MM | eBay
Omega - Electronic f300Hz Chronometer - 198.031 - No Reserve Price - Homme - 1970-1979 - Catawiki
La Cote des Montres : Enchères Omega "Constellation" Chronometer, Electronic F300 Hz. Produced circa 1970. Very fine and rare center-seconds, water-resistant, stainless steel gentleman's electronic wristwatch with date and a stainless steel