1055b

AUTOMATIC • Analog • Hands: Hours, Minutes, Seconds Chronometer

Jewels
25
Frequency
18,000 vph (2.5 Hz)
Diameter
28.5 mm
Height
-

About this caliber

Second generation Rolex Day-Date movement; altered 1055. 7.1mm high instead of 7mm. Introduced around 1957

Technical details

Movement
AUTOMATIC
Display
Analog
Jewels
25
Power reserve
-
Frequency
18,000 vph (2.5 Hz)
Hands
Hands: Hours, Minutes, Seconds Chronometer
Diameter
28.5 mm
Height
-
Parts
-