
Wristwatches · Wristwatch
Tudor Submariner ref. 7021/0, Blue 'Snowflake Confetti Dial' With 'Roulette' Date
- Maker / attribution
- Tudor (maker)
- Date
- c. 1970
- Historical period
- Quartz Revolution (1969 – 1990)
- Country of origin
- Switzerland
- Object type
- Wristwatch
- Stock no.
- Product 9452946587965
- Credit line
- Dealer listing, Oliver & Clarke (product 9452946587965)
- Catalogue title (original)
- Tudor Submariner Ref. 7021/0 - Blue 'Snowflake Confetti Dial' With 'Roulette' Date (English)
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Record summary
Catalogued by Oliver & Clarke (dealer), United Kingdom (stock number Product 9452946587965), 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 overall condition of this piece is fantastic. The case has been lightly, tastefully polished in the past and remains thick, with symmetrical lugs. It shows normal, honest signs of wear from use and age with a few visible blemishes on some of the lugs, noticeable only upon intentional inspection. It comes paired to a later Tudor signed Oyster bracelet with a dive clasp, which is in likely-unpolished condition and suits the watch perfectly. 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. These are what we call 'Confetti' dials, and this piece possesses a beautiful one! It remains in outstanding condition, beautiful and consistent with its color and with evenly 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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