Dorly - “Oenor”

Swiss Watch Fair 1964
The four-in-one watch: simply change the bezel and it becomes (1) a good looking sports watch, (2) a diver’s watch capable of a plunge of more than 1 ,000 feet underwater, (3) a tachymeter or (4) a universal time watch capable of showing the hour at Honolulu or Buenos Aires. Automatic movement with date calendar, case in steel or gold plated. (DORLY - “Oenor”)