Stainless steel Omega 33.3 Chronograph wristwatch, 1940

Dealer description — Somlo Antiques

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. Brand: OMEGA Made: 1940 Model: Chronograph Reference: 2393 Calibre: 33.3 Movement: Manual Material: Stainless steel Features/complications: Three piece case with square pushers Dial: White dial with outer gilt tachymetric scale with inner minute track with strokes to 1/5th of a second, inner telemeter scale and applied gold Arabic numeral hour indices and subsidiary seconds at 9 o’clock, 30 minute register at 3 o’clock with gold leaf shaped hands and gold centre chronograph hand. Case dimensions: 37mm Bracelet/strap: Leather strap Accessories: Certificate of Authenticity SKU: 03458