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Tudor Submariner ref. 7928, 'IDF' Issued with 'Tropical Chapter Ring' Dial — view 1 of 6
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Wristwatches · Wristwatch

Tudor Submariner ref. 7928, 'IDF' Issued with 'Tropical Chapter Ring' Dial

DocumentedDocumented from a dealer's listing; attribution and date as stated by the dealer.
Maker / attribution
Tudor (maker)
Date
c. 1965
Country of origin
Switzerland
Object type
Wristwatch
Stock no.
OC2709
Credit line
Dealer listing, Oliver & Clarke (OC2709)
Catalogue title (original)
Tudor Submariner Ref. 7928 - 'IDF' Issued w/ 'Tropical Chapter Ring' Dial (English)

View the source record (dealer listing) ↗ (opens another website in a new tab)Suggest a correction

Record summary

Catalogued by Oliver & Clarke (dealer), United Kingdom (stock number OC2709), this is a wristwatch by Tudor, made in Switzerland, dated c. 1965. The Atlas places it in the Modern Mechanical Horology period (1945 – 1969) of its Wristwatches collection. The record is illustrated with 6 photographs.

Assembled from the source record's structured fields. Dates and attributions are given as the source states them; where a field is missing the Atlas leaves it blank rather than estimating.

Catalogue description

Dealer description — Oliver & Clarke

The Submariner, namely those produced by Rolex, has long been considered the cream of the crop when it comes to watch collecting as a whole. Possibly the most iconic watch ever produced, the Submariner has long standing utilitarian roots that span decades, and everyone who’s anyone has been spotted wearing one. However, if you look deeper into the Submariner line, you may find a less known but just as incredible model manufactured by Tudor. The Ref. 7928 that we have here dates to circa 1965 and comes with some additional provenance that further adds to its allure. More on that later. The Oyster case remains thick and shows normal wear from use with a crisp and seemingly unpolished bezel insert and a 'fat font' insert. The once glossy black 'gilt' dial within exhibits an incredibly heavy 'tropical' patina from age and UV exposure with some of the brass baseplate showing through on the outside near the Tritium plots. The resulting look is both attractive and unique. Flip it over, and there is an engraving on the caseback that reads "M216." The numbers are actually an issue number for 'Shayetet 13, an Israeli Defense Forces special forces unit, and a clear indication of its military provenance. It also comes fitted to a period-correct Oyster bracelet with a blade clasp, which possesses traces of black paint in some of the tighter areas. Originally, these were actually painted black to be more anti-reflective, so to have residuary black paint is very neat. This is a real piece of history — a phrase often repeated in the world of watches, though rarely as deservedly as in this case. To many collectors of vintage, regardless of whether the focus is of military watches or not, this 'Milsub' has everything going for it. Military issued, properly vintage, honest condition, and its a Tudor. What more does one need?

Historical context

Modern Mechanical Horology (1945 – 1969)

Tool watches for divers, pilots and astronauts; electric watches anticipate the electronic age.

The classic era of the mechanical wristwatch: dive watches, chronographs for motor racing and space flight, GMT watches for jet travel, slim dress watches, automatic calendars, and the rise of Japanese manufacturers alongside Swiss, American, German and Soviet industries.

Read the period in the timelineMore wristwatches from this periodEarlier: Golden Age of Mechanical Watchmaking

Atlas type guide

Dive and water-resistant watches

Keeping water and dust out of a wristwatch was a long-standing challenge. Rolex's screw-down Oyster case (1926) and Omega's Marine (1932) were landmarks; in the early 1950s Blancpain's Fifty Fathoms and Rolex's Submariner defined the professional dive watch with rotating bezels for timing dives, luminous dials and high water resistance. The ISO 6425 standard (1982) later codified what a 'diver's watch' must do.

Dive watches became icons of post-war design and exploration, and their evolution — helium escape valves, ceramic bezels, saturation-diving depth ratings — records the history of underwater work.

What to look for

  • Unidirectional or bidirectional rotating bezel with minute markings.
  • Screw-down crown and case back; depth rating printed on the dial.
  • Luminous hands and markers (radium before c. 1960, tritium c. 1960–1998, then Super-LumiNova).
  • Reference numbers on the case between the lugs or inside the back.

Dating clues

  • Screw-down Oyster cases: from 1926.
  • Professional dive watches: from 1953.
  • Tritium 'T' marks on dials: c. 1960–1998.

General guidance written by the Atlas editors about this kind of object. It is not a statement about this particular piece; for that, rely on the source record above and on physical examination.

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