Submariner Ref. 5512

The reference 5512 (c. 1959–c. 1980) is the Submariner that set the template for every Submariner that followed: the first with crown guards, the first with a 40mm case, and — from the early 1960s — the chronometer-certified no-date Submariner, distinguished from its twin the 5513 by four lines of dial text instead of two. Its production life runs from the last of the gilt dials through the matte-dial era, and its early variants — square and eagle-beak crown guards, gilt two-line dials — sit at the very top of vintage Submariner collecting. A scarcer watch than the long-lived 5513, it is also one of the most frequently "corrected," dial-swapped, and re-cased references in vintage Rolex.

Reference	5512
Production	c. 1959 – c. 1980
Calibre	Rolex cal. 1530 (very early, non-chronometer) → cal. 1560 (chronometer, c. 1959/60–1965) → cal. 1570 (chronometer, c. 1965–1980; hacking seconds from c. 1972). Automatic, 19,800 vph, ~48-hour power reserve
Case	40mm (nominal) stainless steel Oyster case, drilled lugs, 20mm lug width; Twinlock screw-down crown (~7mm); crown guards (square → pointed → rounded)
Crystal	Domed acrylic
Bezel	Bidirectional, black anodised-aluminium insert, 60-minute scale (fat-font/Long 5 inserts in the 1960s)
Dial	Black; gilt (glossy, 1959–c. 1966) then matte with white printing (c. 1967–1980); 2 lines of text on the earliest non-chronometer examples, 4 lines once chronometer-certified ("Superlative Chronometer Officially Certified"); tritium lume ("SWISS T<25"); radium on the very earliest gilt dials ("SWISS")
Bracelet	Oyster: 7206 riveted (early), 9315 folded-link (late 1960s–70s), 93150 solid-link (late production/service); C&I USA-market bracelets also original on some examples

Overview

The 5512 is where the modern Submariner begins. Before it, Submariners (refs. 6204 through 5508) were 37–38mm watches with unprotected crowns and no crown guards. In 1959 Rolex enlarged the case to a nominal 40mm and, for the first time in the Submariner line, fitted crown guards — the small protective shoulders around the winding crown that every Submariner still carries. The 5512 is also the reference that introduced the four-digit no-date architecture that would run, almost unchanged in outline, into the 1980s.

The 5512 launched as a non-chronometer watch on calibre 1530, wearing a two-line gilt dial. Very soon — the chronology is compressed into the first years of production — Rolex fitted the chronometer-rated calibre 1560, and the dial gained two further lines of text, "Superlative Chronometer Officially Certified," creating the four-line dial that is the 5512's instant visual signature. Its sibling, the reference 5513, arrived in 1962 as the non-chronometer, two-line alternative and stayed in production far longer.

The movement story is three chapters: the brief non-chronometer 1530 (1959), the chronometer 1560 (c. 1959/60 to c. 1965), and the chronometer 1570 (c. 1965 to the end), which gained hacking seconds around 1972. The dial story is two: glossy gilt dials with gold-coloured text from 1959 to about 1966 — produced by exposing the brass dial blank beneath black lacquer — and matte dials with white printing from about 1967 onward, a change driven by the arrival of pad-printing (tampography) for dials. The depth rating shifted from meters-first ("200m=660ft") to feet-first ("660ft=200m") around 1967.

Because the 5512 was made in far smaller numbers than the 5513 and lived a shorter life, original early examples — square-crown-guard cases, two-line gilt dials — are genuinely rare, and the reference has attracted more than its share of dial swaps, service parts, and outright assemblies. It is a reference that rewards slow, sceptical study.

Key variants & generations

The gilt-dial era (c. 1959 – c. 1966)

The first 5512s wear glossy black gilt dials — black lacquer over a brass blank, with the text and minute track in gilt (gold-coloured) relief. Early examples, powered by the non-chronometer calibre 1530, carry only two lines of text: the depth rating and "Submariner." Once the chronometer-rated calibre 1560 arrived, two more lines were added, making these the "four-line" gilt dials. Lume on the very earliest gilt dials is radium, marked simply "SWISS" at 6 o'clock; the transition to tritium ("SWISS T<25") came in the early-to-mid 1960s.

Within the gilt era, collectors distinguish: chapter-ring dials (a separate inner minute ring), underline dials (a small line printed under the depth rating, above or below), exclamation-point dials, and the "Bart Simpson" coronet — a version of the Rolex crown whose shape recalls the cartoon character's spiky hair. These are collector shorthands, not Rolex terminology, and they overlap in time rather than forming a neat sequence. Extremely rare gilt dials exist with 3-6-9 "Explorer" numerals instead of round hour markers, reportedly associated mostly with the UK market. All gilt-dial 5512s are meters-first.

Crown-guard evolution

The 5512's crown guards went through four documented shapes:

• Square crown guards — the very first 1959 cases; the guards sit so close to the crown that winding is difficult. Production lasted less than a year; dealer and specialist estimates put surviving examples around 100. Because of their position at the very start of the reference's history, all genuine square-guard examples carry gilt dials.
• "Eagle beak" guards — a brief transitional shape, rarer still (specialists speak of fewer than 30 known).
• Pointed crown guards (PCG) — c. 1959–1963, the classic early-1960s look.
• Rounded crown guards — from c. 1963 through the end of production, the shape every later Submariner inherits.

The guards are the fastest way to date a 5512 case, and they are also the fastest way to spot trouble: rounded guards on a serial that should be pointed, or guards that look too full and sharp for their dial era, demand explanation.

The matte-dial era (c. 1967 – c. 1980)

Around 1967 the gilt process gave way to matte dials with white pad-printed text — the crisp, tool-watch look that defines the later vintage Submariners. The 5512's matte dials always carry four lines of text, and from the changeover the depth rating reads feet-first ("660ft=200m"). Tritium lume throughout. Movements are the calibre 1570, gaining hacking seconds around 1972. Late-production 5512s exist with the large-lume-plot "Maxi" style dials (collectors' "Maxi MK III"), and cases from this era commonly show "5513" stamped inside the caseback — the two references shared the case, so a 5513 caseback stamp on a 5512 is a factory reality, not automatically a red flag.

What to check before buying

• Dial originality first. The dial is the value. Check for redials (softer printing, wrong fonts, modern lume in old plots), service replacement dials (later-era or Luminova dials fitted at service), and period mismatch — a matte dial in a square-guard case is impossible, and the two-line gilt dial belongs only to the very earliest 1959 examples.
• Line count matches the movement. A four-line dial must sit over a chronometer-grade movement (1560 or 1570); a two-line dial should be on a 1530. The well-documented Steve McQueen 5513 auction saga — a 5513 found wearing a 5512 four-line dial fitted at Rolex service — is the cautionary tale for the whole 5512/5513 family.
• Crown guards vs. serial. Guards that are too early or too late for the case serial indicate a recased watch; also check that the guards haven't been re-cut or rebuilt during polishing.
• Case condition. Over-polishing rounds the lugs and chamfers and can erase the reference and serial engravings between the lugs. Full, sharp bevels are the premium; heavy polishing is the discount.
• Bezel insert. 1960s fat-font and "Long 5" inserts are correct for gilt-era watches and frequently replaced with later thin-font or service inserts. Faded "ghost" inserts command attention but are easy to fake — verify the fade against the dial's lume patina.
• Movement. Confirm the calibre matches the dial era (1530 only on the earliest two-liners; 1560 to c. 1965; 1570 after, hacking from c. 1972). Movement swaps across the 15xx family are easy and common.
• Bracelet. Riveted 7206 (early), folded 9315 with 280/380 endlinks (late 60s–70s), solid 93150 (late/service). USA-market C&I bracelets are correct on some examples. Mismatched date stamps between bracelet and watch are normal within a year or two — a decade apart is not.
• Lume. Hands and dial plots should match in tone and age. Relumed hands with an original dial, or one dead plot replaced, are common assembly points — check under UV.
• Box and papers. Welcome but rare; the watch's internal consistency matters far more than accessories.

Sources consulted

Production dates and calibre details were cross-checked through at least two reputable sources. Where sources disagree, the disagreement is noted in the text above. All prose is original to The Geneva Papers™.