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Blancpain Fifty-Fathoms 'Mid size' — view 1 of 6
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Wristwatches · Wristwatch

Blancpain Fifty-Fathoms 'Mid size'

DocumentedDocumented from a dealer's listing; attribution and date as stated by the dealer.
Maker / attribution
Blancpain (maker)
Date
c. 1960s
Country of origin
Switzerland
Object type
Wristwatch
Dimensions
Case 41 mm
Stock no.
OC3173
Credit line
Dealer listing, Oliver & Clarke (OC3173)
Catalogue title (original)
Blancpain Fifty-Fathoms 'Mid size' - Gloss Black Dial Unpolished W/ Documentation (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 OC3173), this is a wristwatch by Blancpain, made in Switzerland, dated c. 1960s. The Atlas places it in the Modern Mechanical Horology period (1945 – 1969) of its Wristwatches collection. Recorded dimensions: Case 41 mm. 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 Blancpain Fifty Fathoms is widely credited as being one of the first three truly purpose-build dive watches that came out in 1953. During the first ten years or so of production, many different variants have surfaced, with slightly different dials, bezels, casebacks, and even movements. Unlike the Zodiac Seawolf and Rolex Submariner from the same era, the Fifty Fathoms range feature a much larger 41mm case size. Considered massive in the 1950s, it is a great size by the standards of today, due largely in part to the way the lugs turn down and taper inward. It is a beautiful design. The cases were also bead-blasted to reduce glare and increase scratch resistance. The result is a very tool-like appearance, yet still elegant with its glossy dial and beautiful script text. The resulting look, much like the other two aforementioned divers, is a wonderfully balance design. The example that we have here dates to circa the 1960s and is a rare 'mid size' variant. The 34mm case with a 'squared' inner-lug design very characteristic of 'skin divers' from this era, this piece would have originally been sold as a lighter, more recreational alternative to the more expensive and larger Fifty-Fathoms. Of course, being Blancpain, they did not skimp out on anything. Inside, the very same automatic-winding movement as its larger sibling can be found behind the screw-down caseback, a glossy black luminous dial and handset, and a bi-directional rotating timing bezel on the outside. The condition is simply fantastic. The case shows light wear throughout with its correct factory high-polish finishing present and clear. The black dial within retains its deep glossy black surface, with applied, patinated indices and a matching handset. The bezel assembly is correct and possesses its elegant 'coin-edge' finishing and houses a black acrylic insert. It is seemingly devoid of any major fractures and shows only light wear. As is the case with other divers from the 1950s-1970s, good honest examples like this do not surface (no pun intended) on the open market as often as you might think — as collectors tend to hold onto examples like this... ... And these 'mid size' variants in particular rarely surface on the open market, making this a very, very rare opportunity to snag one.

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

Wristwatches

Bracelet watches were worn by women from the early nineteenth century — Breguet made one for Caroline Murat, Queen of Naples, in 1810–12 — but the wristwatch only became a man's instrument with military use and aviation in the early twentieth century. Between the World Wars it overtook the pocket watch; the 1920s and 1930s brought rectangular Art Deco cases, water-resistant cases and the first automatic winding systems.

After 1945 the wristwatch became a carrier of identity — dress watches, sports and dive watches, chronographs, calendars — produced by Swiss, American, Japanese, German, Soviet and Chinese industries. The quartz revolution after 1969 and the mechanical renaissance since the 1990s, including the rise of independent watchmakers, complete the story.

What to look for

  • The reference number (between the lugs or inside the case back) and serial number, the starting point for dating.
  • The calibre: its maker and number are often stamped under the dial or on the bridge.
  • Originality of dial, hands and crown — refinished ('redial') dials are common.
  • Case material marks: 18K/750, 14K/585, stainless steel, gold-filled, plated.

Dating clues

  • Wire-lug cases: before c. 1925.
  • Water-resistant screw-down cases: from 1926.
  • Quartz movements: from 1969; sapphire crystals widespread after c. 1980.

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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