Skip to content
Citizen Seven Star Dive Watch (Ref. 4-520343 Y), 1969 — view 1 of 6
View 1 of 6 · Image: Craft & Tailored · original image source (opens another website in a new tab)

Wristwatches · Wristwatch

Citizen Seven Star Dive Watch (Ref. 4-520343 Y), 1969

DocumentedDocumented from a dealer's listing; attribution and date as stated by the dealer.
Maker / attribution
Citizen (maker)
Date
1969
Country of origin
Japan
Object type
Wristwatch
Stock no.
CZNSSDW
Credit line
Dealer listing, Craft & Tailored (CZNSSDW)
Catalogue title (original)
1969 Citizen Seven Star Dive Watch (Ref. 4-520343 Y) (English)

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

Record summary

Catalogued by Craft & Tailored (dealer), Los Angeles (stock number CZNSSDW), this is a wristwatch by Citizen, made in Japan, dated 1969. 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 — Craft & Tailored

Founded in 1918 in Japan, Citizen is the Pepsi to Seiko's Coke, and one of the most integrated manufacturers in the watch world. They make all of their watch components in-house and, remarkably, don't have any manufacturing facilities outside the brand's home country. SPECS Stock # CZNSSDW Brand Citizen Style Seven Star Dive Watch Model 4-520343 Y Serial 90XXXXXX Size Men's Material Stainless Steel Dial Matte Black Millimeters 43.5 Bracelet Citizen Stainless Steel Bracelet CASE & BRACELET The robust and large case shows minor signs of use with nominal evidence of prior polishing present, and retaining full factory geometry and dimensions. The case features its original signed crowns at 2 and 4 o'clock. The caseback is clean with minimal signs of use and engravings that remain deep and legible. The watch comes supplied with its original and rarely seen stainless steel bracelet. The bracelet remains in excellent condition and will accommodate wrist sizes up to 7 inches and beyond with the extension fitted within the clasp. DIAL & HANDS The rich, glossy black dial is in virtually perfect vintage condition, exhibiting no signs of aging or blemishes with an internal bezel to match. The lume plots, featuring the original pale green lume, are all intact when inspected under UV light. The original Mercedes hands also show no degradation and are also in excellent condition, aging with the same handsome coloration as the plots. ACCESSORIES None. The watch is functioning and keeping time perfectly, previous service history is unknown. A movement service can be purchased upon request.

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.

Related records