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Omega Seamaster 120m Automatic Chronograph 1971 a.k.a. Big Blue

About the Item

1971 Automatic Omega Seamaster 120m Chronograph a.k.a. Big Blue From my private collection, the most beautiful Omega ever. Produced for only 3 years from 1971 until 1973. An extremely rare Seamaster in great condition with the fantastic 1040 Caliber. A beautiful dark blue dial in near mint condition. The glass has some very slight scuffs which can be seen in the images. The solid stainless steel case with reference number ST1760004 is also in great condition. This diving watch had a complete maintenance service done by Omega in Bienne, Switzerland in 2004, when I bought it, and has been worn very little since. It comes with the original Omega mesh/shark band and it’s original extension piece. So the Big Blue had an extraordinary movement that had all the ingredients needed to power a proper tool diver chronograph. Another characteristic that made the watch stand out from the crowd was its size and, most notably, its shape. Weighing a whopping 176 grams, it measured 47mm in width, including the crown; 52mm in length; and 17mm thick, with a 22mm lug size. The Big Blue was so huge since the engineers had in mind to build a watch which was highly legible in the hostile underwater environment. The helmet-shaped case is distinctive. The company first introduced helmet cases in 1969 in their Flightmaster model (see here and here for two in-depths about the Flightmaster) and continued the trend with the Speedmaster MkIII. The Big Blue had its case milled from a solid block of stainless steel contoured in such a way to be extremely comfortable while at the same time offering protection for the watch from shocks and bumps during the dive. If we look closely the case has a characteristic protruding bumper that was just perfect for this objective. For complete information on this beauty, please check monochrome watches on the internet.
  • Creator:
    Omega (Maker)
  • Dimensions:
    Height: 0.67 in (1.7 cm)Width: 1.86 in (4.7 cm)Depth: 2.05 in (5.2 cm)
  • Style:
    Mid-Century Modern (Of the Period)
  • Materials and Techniques:
  • Place of Origin:
  • Period:
  • Date of Manufacture:
    1971
  • Condition:
    Replacements made: The Seamaster has been overhauled by Omega in Switzerland. Wear consistent with age and use.
  • Seller Location:
    Weesp, NL
  • Reference Number:
    Seller: prive1stDibs: LU146428225553
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