
Wristwatches · Wristwatch
Hamilton 'G.S.' 24-Hour Dial, 1960s
- Maker / attribution
- Hamilton (maker)
- Date
- 1960s
- Historical period
- Modern Mechanical Horology (1945 – 1969)
- Country of origin
- Switzerland
- Object type
- Wristwatch
- Stock no.
- Product 11122803724
- Credit line
- Dealer listing, S.Song Watches (product 11122803724)
- Catalogue title (original)
- Hamilton 'G.S.' 24-Hour Dial (English)
View the source record (dealer listing) ↗ (opens another website in a new tab)Suggest a correction
Record summary
Catalogued by S.Song Watches (dealer), Seattle (stock number Product 11122803724), this is a wristwatch by Hamilton, made in Switzerland, dated 1960s. The Atlas places it in the Modern Mechanical Horology period (1945 – 1969) 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 — S.Song Watches
The G.S. on the dial of this watch stands for General Service, and while the 6B variants were issued to the RAF, the G.S. versions were specifically made for government personnel. This included government agencies overseas, foreign and commonwealth office aid groups and for former military men who worked overseas on behalf of the British government. This example is perhaps the rarest of all the Hamiltons- a G.S. with a 24-hour dial. Highly unusual, I have only come across a couple in the past few years. The differences from a standard G.S. is the sterile caseback and of course, the unique 24-hour dial where the Hamilton logo has shifted to 6 o’clock to make space for the extra text. There is not much information on these, but for the military collector and for those who know, this is a true grail.
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.
Related records
Pocket Watches · c. 1943
Hamilton 4992B, GCT Navigation U.S Air Force, c. 1943
Antiquorum auction archive, Geneva
Wristwatches · c. 1940s
Hamilton Bomb Timer, c. 1940s
Antiquorum auction archive, Geneva
Wristwatches · originally sold in February 2025 (per the lot record)
Hamilton wristwatch, ref. H51606640, American Classic Chrono-Matic 50 Limited Edition, originally sold in February 2025 (per the lot record)
Antiquorum auction archive, Geneva
Wristwatches · c. 1940s
Hamilton wristwatch, Bomb Timer Watch, circa 1940's
Antiquorum auction archive, Geneva
Wristwatches · 1945
Wristwatch by Eterna, 1945
Museum Rotterdam
Wristwatches · c. 1945
Breitling Premier, ref. 790, c. 1945
Antiquorum auction archive, Geneva
Wristwatches · c. 1945
Universal Genève Uni-Compax, ref. 22492, c. 1945
Antiquorum auction archive, Geneva
Wristwatches · c. 1950s
Baume & Mercier wristwatch, c. 1950s
Antiquorum auction archive, Geneva
