Rolex · Automatic

1055b

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

Rolex caliber 1055b movement
Winding
Automatic
Frequency
18,000 vph (2.5 Hz)
Jewels
25
Diameter
28.5 mm

Watches with this movement

2

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