1943 Omega Cal.33.3 CHRO Ref.987 Tropical Snail Dial

Free Worldwide Insured Courier Shipping / Authenticity Guaranteed / 14-days Inspection Period / 1-year Warranty

Delivery: ca.10 days

Rare and highly collectible Omega chronograph featuring the famous and arguably one of the best chronograph movements ever made - the in-house manual-winding Caliber 33.3. 

This particular piece is notable for an oversize 38 mm full stainless steel case, amazing full tropical snail dial turning into warm creamy color and excellent overall condition. A true vintage timepiece that you won't be able to take off your wrist.

Professionally serviced in December 2017. Technical warranty: 1 year.


  • All stainless steel 2-body case with snap-on stainless steel caseback.
  • Excellent overall condition and strong geomtery. May be lightly polished in the past 
  • 38 mm (without crown) / 44 mm (lug-to-lug) / 20 mm (between lugs)
  • Original steel fluted "onion" crown and original pushers in excellent condition.
  • Serial number: 10123575


    • Manual-winding chronograph
    • Legendary Cal. 33.3 signed "Omega"
    • 17 jewels, 18000 A/h, 40 hours of power reserve. 
    • Perfect condition showing practically no traces of aging or poor service.
    • Professionally serviced.


    • Original and untouched dial in excellent condition
    • Turning into warm creamy tone due to natural aging and possible exposure to the sunlight
    • Signed "Omega" at 12 o'clock.
    • Original hour and minute hands in blue steel. Original blue steel chrono hands. Hands have aged to a darker tone.

    Delivery set:

    • The watch with high-quality handmade tan calfsking strap
    • Our company’s warranty certificate, invoice and general terms and conditions.

    Size Guide
    Continue Shopping or Checkout

    Collections: Chrono 33.3, Watches

    Category: Omega

    Related Items

    FAQ - Size guide

    Vintage Watches

    General Questions

    Payment & Delivery

    Condition Report Glossary

    Sizing Guide

    Warranty & Refund

    Precision of Vintage Watches

    Terms & Conditions

    Measuring a watch

    It is always crucial to understand the size of the watch, especially when it comes to vintage watches which are generally considered as too small in comparison with what watch industry offers today. For example, the original Patek Philippe Calatrava introduced in the 1930s was only 31 mm in diameter, while today's classic Calatrava is 39 mm. When you think about 8 mm, it doesn't seem to be a big difference, but believe it is.

    In our condition reports we normally disclose three most important parameters as follows: diameter without crown / lug-to-lug length / lug width. 

    Diameter without crown

    It is, so far, the most important measurement to understand the size of a regular round-shaped watch.It helps you to understand proportions and overall look of the watch. It is important to consider width of the bezel and color of the dial, because certain combinations may make the watch look bigger, while some other smaller. It is all very individual, however there is common understanding:

    Lug-to-lug width

    This parameter will help you to understand whether the watch is comfortable for wearing. You should compare lug-to-lug width with the width of your wrist, and if lug-to-lug width is smaller or equal, then this watch shall be comfortable.

    Lug width

    This measurement is defining what size of strap you need for the particular watch. Depending on era and manufacturer you can find watches with lug width between 14 mm and 24 mm. Most common sizes are 18 mm and 20 mm.