Mido Ocean Star “Datoday”

Swiss Watch Fair 1967 BF 16
Two new automatic watches with day-and-date calendar. A push-button systern allows instantaneous date change without interrupting the seconds-hand. Waterproof steel or gold-plated case. Watch on left has no horns, its removable bracelet leading directly into the case. Model on the right with small horns. (MIDO Ocean Star “Datoday”)