La Cote des Montres : Enchères Sorna Watch, Grenchen, Ref. 2692. Produced in the 1970's. World Time, water-resistant, "tonneau bombé", stainless steel gentleman's wristwatch with date, round button chronograph, register, tachometerand telemeter.
BOLD Sorna T21707-641 Diver/Diving Computer Montre - Etsy France
Chrono Sibel / Sorna
Coin des Affaires - sorna automatique world time nos