Rolex 1520

Last updated: July 27, 2025

Brand

Rolex

Caliber Number

1520

Production Period

1963-c. 1980

Lignes

12.5”’

Diameter

28.5 mm

Height

5.75 mm

Power Reserve

Unconfirmed

Frequency

19,800 bph (2.75 Hz)

Jewels

17, 25, or 26

Escapement

Swiss lever escapement

Anti-Shock Device

Unconfirmed

Hand Count

Manufacture Region

Unconfirmed

Functions

Hours, Minutes, Sweep Seconds

Rolex 1520 Description

The Rolex Caliber 1520 is an automatic movement introduced in 1963. It was based on the Caliber 1530 and was designed as a durable and more cost-effective option for Rolex’s non-chronometer watches. It famously powered the Submariner Ref. 5513 and the Air-King Ref. 5500. The 1520 is characterized by its use of a stick regulator and a flat hairspring. Despite not being a certified chronometer, it is highly regarded for its robustness and reliability, solidifying its place as a workhorse movement in Rolex’s history.