Rolex 5513 submariner

 The Rolex Submariner Reference 5513 is an iconic vintage dive watch produced from 1962 until 1989

Key Features

No-Date Dial: It features a clean, perfectly symmetrical black dial without a date window or cyclops magnifier. [1, 2]
Case and Crystal: It has a 40mm stainless steel case paired with a domed acrylic (plexiglass) crystal and a bidirectional friction-fit aluminum bezel. [1, 2]
Movement: It uses the non-COSC (Contrôle Officiel Suisse des Chronomètres) certified Caliber 1520 (and earlier 1530) automatic movement. [1, 2]
Water Resistance: Rated to 200 meters (660 feet). [1]

Evolution and Dials

Because the 5513 was made for nearly three decades, it went through major dial and bracelet transitions: [1]

Gilt Dials (1962–1967): Early glossy black dials with golden text and tracks, highly prized by collectors as rare "holy grails". [1, 2]
Matte Dials (1967–1984): Matte black dials with painted tritium hour markers, including early "meters first" depth ratings and later "Maxi" dials with larger lume plots. [1, 2]
Glossy White Gold Surround Dials (1984–1989): Late-era dials featuring glossy black finishes with white gold rings around the tritium hour markers, bridging vintage charm with modern aesthetics

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1520 & 1530 calibers

The Rolex Caliber 1530 and Caliber 1520 are legendary, highly robust mechanical automatic movements that powered some of Rolex's most iconic vintage tool and dress watches from the late 1950s through the 1980s

Rolex Caliber 1530

Introduced: 1957
Beat Rate: 18,000 vibrations per hour (vph)
Jewels: 17, 25, or 26 jewels (depending on configuration)
Hairspring: Breguet overcoil hairspring
Status: Built as an early in-house base movement, it was generally higher grade and often found in watches bearing "Super Precision" or chronometer designations on the dial (such as early Submariner ref. 5508 and 5512, and early Air-King ref. 5500). It was phased out around 1963. [1, 2, 3]

Rolex Caliber 1520

Introduced: 1963 (produced until roughly 1980)
Beat Rate: Increased to 19,800 vph
Jewels: Available in 17 and 26 jewel versions
Hairspring: Flat hairspring with a stick regulator
Status: Introduced as a simplified, cost-effective successor to the 1530. While non-COSC certified, it is famously tough and powered long-running workhorse models like the later Submariner ref. 5513 and late Air-King ref. 5500 (often labeled "Precision" on the dial). [1, 2, 3, 4, 5]

Key Differences

Frequency: The 1530 beats at a traditional 18,000 vph, whereas the 1520 runs at a faster 19,800 vph. [1]
Regulation & Hairspring: The 1530 utilizes a fine Breguet overcoil hairspring, while the 1520 uses a flat hairspring and a stick regulator mechanism. [1, 2]
Positioning: The 1530 is historically tied to higher-tier chronometer-grade/super-precision labeling, while the 1520 was engineered as a reliable, rugged, and more economical workhorse movement.

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