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Tudor Submariner ref. 7021/0, Blue 'Snowflake Confetti Dial' With Roulette Date — view 1 of 6
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Wristwatches · Wristwatch

Tudor Submariner ref. 7021/0, Blue 'Snowflake Confetti Dial' With Roulette Date

DocumentedDocumented from a dealer's listing; attribution and date as stated by the dealer.
Maker / attribution
Tudor (maker)
Date
c. 1970
Country of origin
Switzerland
Object type
Wristwatch
Stock no.
OC2206
Credit line
Dealer listing, Oliver & Clarke (OC2206)
Catalogue title (original)
Tudor Submariner Ref. 7021/0 - Blue 'Snowflake Confetti Dial' With Roulette Date Unpolished (English)

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Record summary

Catalogued by Oliver & Clarke (dealer), United Kingdom (stock number OC2206), this is a wristwatch by Tudor, made in Switzerland, dated c. 1970. The Atlas places it in the Quartz Revolution period (1969 – 1990) 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. These pieces are not only more unique and uncommon than the traditional Submariner, but offer a more fun, playful design — particularly with the blue-dialed variants with a pop of red in the 'Roulette' date wheel like the example that we have here. This example, a Ref. 7021/0, dates to circa 1970 and is known as a 'Snowflake' for its distinctive hands and indices. In recent years, these have developed a cult following with collectors and have become one of the more sought after and collectible vintage Tudor Submariner References. The condition of this piece is excellent, with a thick, unpolished case showing normal, honest signs of wear throughout with only a few noteworthy impressions and blemishes present on the left case profile. It comes fitted to a correct folded-link Oyster bracelet with a "Rolex" signed blade clasp, which is also in unpolished condition and matches the watch perfectly. The bezel insert is slightly later and retains an incredible vibrant blue color and shows light wear throughout. The real treat with this piece, however, is that blue dial. For a short time, the early blue 'Snowflakes' exhibited additional colors under close inspection within the blue of the dial, usually 'flakes' of green and even hints of gold. T hese are what we call 'Confetti' dials. The one we have here is a beautiful, clean example with consistent color and texture, and lightly patinated characteristic square Tritium plots. The equally characteristic handset matches beautifully both to the naked eye and under UV inspection. As if the dynamic color of the dial wasn't enough, this pice also has a 'roulette' date wheel, with alternating black and red numbers — further adding to the layers of whimsical fun. These days, Tudors most popular line, the Black Bay, drawn largely from pieces like the one that we have here, and for good reason. As the expression goes, you can’t know where you’re going until you know where you’re from. This is a fantastic example of a vintage diver that has seen steady grown in popularity, with no signs of stopping.... ...And Rolex sure never made a steel Submariner with a blue dial!

Historical context

Quartz Revolution (1969 – 1990)

Seiko's Astron begins mass quartz timekeeping; traditional industries contract sharply.

Quartz and digital watches transformed the market after 1969. Swiss employment collapsed, Japanese and Hong Kong production soared, and the Swatch (1983) helped the Swiss industry recover; mechanical watches survived as luxury goods.

Read the period in the timelineMore wristwatches from this periodEarlier: Modern Mechanical Horology

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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