Rolex 3055

The Rolex 3055 was the fifth-generation Day/Date movement from Rolex.

Introduced in 1977, Cal. 3055 increased the beat rate to the modern 28,800 A/h in the famous Rolex Day-Date range. This replaced the Cal. 1056, which had been used since 1965. It was replaced in 1988 with the 31-jewel Cal. 3155.

It is an automatic movement and a certified chronometer.

Used in the model Rolex Oyster Perpetual Day-Date.

Although the date is quickset in crown position 2, the day function is not quickset.

Manufacturer: Rolex Description: Self-winding movement, bi-directional winding Chronometer certificate (COSC) Balance wheel with Reglage screws Breguet hairspring Kif shock protection for balance wheel and escape wheel Functions: Central seconds Rapid calendar advance Day of week indication Hacking seconds Data: 12½ lignes D 28.5 mm, H 6.3 mm 27 jewels 28,800 A/h Power reserve 48h Production period: 1977-1988 Predecessor: Rolex 1556 Successor: Rolex 3155

External Links

• Rolex 3055