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1947 Tissot CH27 C12 Chronograph

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

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Our personal favorite chrono from the 1940s - a beautiful Tissot CH27. This watch is notable for many reasons. First of all because of Lemania CH27 C12, the movement which gives a birth to Omega Cal.27 CHRO and then the famous Cal.321. In fact, these movements are technically identical showing only minor differences in finishing. This amazingly designed movement is hidden inside the most sought-after version of the case - patented "waterproof" case with screw-down caseback. Finally, the watch is boasting with a very charming creamy-white dial in amazing untouched condition. The watch is mint but showing a true vintage character, the patina is here but barely noticeable and charismatic. 

Though some may say "i'd prefer the Omega", this Tissot appears to be a way more rare than both Omega 27 CHRO and early executions of Cal.321. There are always few Omega pieces on the market while an all original Tissot pops up once a year. Don't miss your chance.

The watch went through complete service in May 2018! Technical warranty: 1 year.


  • Stainless steel 2-body case with screw-down case back. Mixed satin and high polished finishing.
  • Polished in the past, overall good condition showing no traces of oxidation
  • 35.3 mm (without crown) / 42 mm (lug-to-lug) / 18 mm (between lugs)
  • Original steel fluted crown. Original "mushroom" pushers.
  • Service plexiglass crystal.


    • Manual-winding 3-reg column wheel chronograph
    • Caliber CHRO 27 C 12 by Lemania - technically equal to Omega 321
    • Rhodium-plated, 17 jewels, 18000 A/h, 40 hours of power reserve, no shock-protection.
    • Fully serviced in May 2018


    • Original creamy-white dial in outstanding condition showing uniform warm patina
    • Radium Arabic numerals
    • Signed "Tissot" at 12 o'clock and "Swiss" at 6 o'clock. 
    • Original blue steel hands (darkened) with original radium

    Delivery set:

    • The watch with premium leather strap and generic buckle
    • Our company’s warranty certificate, invoice and general terms and conditions.

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    Sizing Product

    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.