
Wristwatches · Wristwatch
International Watch Co. wristwatch, ref. 325, IWC Ref. 325;, circa 1946
- Maker / attribution
- International Watch Co. (brand / maker)
- Date
- c. 1946
- Historical period
- Modern Mechanical Horology (1945 – 1969)
- Country of origin
- Switzerland
- Object type
- Wristwatch
- Materials / technique
- stainless steel
- Dimensions
- diameter 42 mm
- Auction house
- Antiquorum auction archive, Geneva
- Lot
- Lot 358-14
- Credit line
- Auction lot record: LOT 14, Monaco Auction
- Catalogue title (original)
- INTERNATIONAL WATCH COMPANY, IWC REF. 325; (English)
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Record summary
Catalogued by Antiquorum auction archive, Geneva (lot Lot 358-14), this is a wristwatch by International Watch Co., made in Switzerland, dated c. 1946. The Atlas places it in the Modern Mechanical Horology period (1945 – 1969) of its Wristwatches collection. Materials and techniques recorded by the source: stainless steel. Recorded dimensions: diameter 42 mm. The record is illustrated with 4 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
Antiquorum catalogue description
Fine, rare and large, stainless steel manual-winding wristwatch, with silver dial and subsidiary seconds at 6.
Lot specifications (Antiquorum)
Model: "Portuguese"; Reference: 325; Case No.: 1 117 225; Material: stainless steel; Bracelet: leather strap; Buckle: stainless steel pin buckle; Caliber: 98; Diameter: 42 mm.; Signature: dial, case and movement; Accessories: Certificate of authenticity
Inscriptions & marks
dial, case and movement
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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