18ct yellow gold chronograph 33.3 wristwatch. Made 1935
18ct yellow gold chronograph 33.3 wristwatch. Made 1935
18ct yellow gold chronograph 33.3 wristwatch. Made 1935
18ct yellow gold chronograph 33.3 wristwatch. Made 1935
18ct yellow gold chronograph 33.3 wristwatch. Made 1935
18ct yellow gold chronograph 33.3 wristwatch. Made 1935
  • Load image into Gallery viewer, 18ct yellow gold chronograph 33.3 wristwatch. Made 1935
  • Load image into Gallery viewer, 18ct yellow gold chronograph 33.3 wristwatch. Made 1935
  • Load image into Gallery viewer, 18ct yellow gold chronograph 33.3 wristwatch. Made 1935
  • Load image into Gallery viewer, 18ct yellow gold chronograph 33.3 wristwatch. Made 1935
  • Load image into Gallery viewer, 18ct yellow gold chronograph 33.3 wristwatch. Made 1935
  • Load image into Gallery viewer, 18ct yellow gold chronograph 33.3 wristwatch. Made 1935

18ct yellow gold chronograph 33.3 wristwatch. Made 1935

OMEGA
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  • Brand: OMEGA
  • Made: 1935
  • Model: Chronograph
  • Reference: 
  • Calibre: 33.3
  • Movement: Manual
  • Material: 18ct yellow gold
  • Features/complications: Chronograph and square pushers
  • Dial: Silvered, two-tone dial with outer printed tachymetric scale and multi-scale with inner minute track with strokes to 1/5th of a second featuring black printed alternating baton and Arabic numeral hour markers with subsidiary seconds at 9 o’clock, 30 minute register at 3 o’clock and blued steel syringe shaped hands with centre chronograph hand
  • Case dimensions: 37.5 mm
  • Bracelet/strap: Leather strap
  • Accessories: N/A
  • Web reference: 02877

Essay: Developed by Lemania in 1933 the OMEGA manual winding chronograph 33.3 and was a technical marvel for its time and is still revered by collectors today. The 33.3 was far larger than most chronographs for its time and became a favourite of many military forces as well as explorers of the day. The three-piece stainless-steel case is in great condition with well-defined crisp edges to the lugs.

This calibre was initially produced with an independent start-stop reset mono-pusher located at 2 o’clock. However, like the calibre 28.9, a version with two pushers was introduced in 1938: a separate stop-start pusher and a reset pusher integrated into the crown or at 4 o’clock. Anti-shock and anti-magnetic was introduced in 1942 and the name of the calibre 33.3 CHRO changed in 1949 as two lines of chronograph models were introduced: the calibre 170 used to equip non-resistant models and the calibre 171 to equip water-resistant models.

The calibre 33.3 CHRO was regarded as a very precise and reliable movement with 14,000 pieces produced until 1952.