Skip to content
Zenith wristwatch, ref. 11.2430.4069/21.C773, Heritage Pilot Type 20 Ton-Up, originally sold in 2024 — view 1 of 3
View 1 of 3 · Image: Antiquorum Genève SA · original image source (opens another website in a new tab)

Wristwatches · Wristwatch

Zenith wristwatch, ref. 11.2430.4069/21.C773, Heritage Pilot Type 20 Ton-Up, originally sold in 2024

DocumentedDocumented from an auction catalogue; attribution as stated by the auction house.
Maker / attribution
Zenith (brand / maker)
Date
originally sold in 2024 (per the lot record)
Country of origin
Switzerland
Object type
Wristwatch
Materials / technique
steel
Dimensions
diameter 45 mm
Lot
Lot 378-7
Credit line
Auction lot record: LOT 7, Hong Kong May 31st, 2025
Catalogue title (original)
ZENITH, REF. 11.2430.4069/21.C773, HERITAGE PILOT TYPE 20 TON-UP, STEEL (English)

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

Record summary

Catalogued by Antiquorum auction archive, Geneva (lot Lot 378-7), this is a wristwatch by Zenith, made in Switzerland, dated originally sold in 2024 (per the lot record). The Atlas places it in the Contemporary Horology period (2010 – Present) of its Wristwatches collection. Materials and techniques recorded by the source: steel. Recorded dimensions: diameter 45 mm. The record is illustrated with 3 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

A fine, special, self-winding pilot’s chronograph wristwatch framed in a steel case, with a matte khaki dial featuring oversized Arabic numerals made entirely of Super-Luminova, and an engraved screwed caseback emphasizing the sky spirit of this model.

Lot specifications (Antiquorum)

Model: Heritage Pilot Type 20 Ton-Up; Reference: 11.2430.4069/21.C773; Bracelet: Zenith steel pin buckle; Caliber: El Primero 4069; Diameter: 45mm; Signature: dial, case and movement; Accessories: Zenith fitted box, tag, warranty card dated 2024, card holder

Inscriptions & marks

dial, case and movement

Historical context

Contemporary Horology (2010 – Present)

Silicon components, connected watches, optical-lattice research clocks and a thriving independent scene.

Smartwatches became the world's best-selling watches, while mechanical watchmaking focuses on craft, innovation (silicon components, new escapements) and independent makers.

Read the period in the timelineMore wristwatches from this periodEarlier: Mechanical Renaissance

Atlas type guide

Military, pilot and travel watches

The wristwatch owes much of its adoption by men to warfare and aviation. Wristlets — small pocket watches soldered with lugs and worn on a strap — were used in colonial campaigns and became standard equipment in the First World War, with protective grilles over the crystal ('shrapnel guards'). Louis Cartier's Santos (1904), designed for the aviator Alberto Santos-Dumont, is often cited as an early purpose-made pilot's watch.

In the Second World War governments specified watches in detail: the German B-Uhr observation watches, the American A-11, and the British 'W.W.W.' (the 'Dirty Dozen' set of 1945). After the war, jet travel brought GMT and world-time watches, which show two or more time zones at once — Louis Cottier's world-time mechanism and the Rolex GMT-Master (1955) are examples.

What to look for

  • Military markings on the case back: broad arrow, issue numbers, 'W.W.W.', 'A.T.P.'
  • High-legibility black dials with luminous Arabic numerals; oversized crowns for gloved hands.
  • 24-hour hands and rotating 24-hour bezels or city rings on GMT/world-time watches.
  • Wire lugs on early wristlets converted from pocket watches.

Dating clues

  • Wire-lug wristlets: c. 1900–1925.
  • Military specifications of the Second World War: 1939–1945.
  • GMT and world-time wristwatches: mainly after 1950.

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