Omega 136.011: choosing a Seamaster 600 or Genève

    Omega reference 136.011 is a 34 mm manual-wind watch from 1966-1969, found as both Seamaster 600 and Genève with calibers 611 or 613.

    Omega - Seamaster 600 - 136.011

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    Reference 136.011 is not tied to one dial name. Watches from 1966-1969 are found as both Seamaster 600 and Genève, which makes the wording on the dial less useful than the agreement between dial, movement and case. The reference is a compact, manual-wind Omega with a date display, built in stainless steel or with gold plating over a case paired with a stainless steel back.

    The strongest version is the steel watch with an even silver sunburst dial, intact applied furniture and a case that still has a defined lug profile. A heavily speckled or reddish dial can be genuine ageing, but it is damage rather than patina when the surface has degraded. Buy that look only at a clear discount to an evenly aged dial, because a refinish costs more in lost value than ordinary case wear.

    Collector's guide to Omega

    Known production years

    1966-1969

    Case diameter

    34 mm, excluding the crown

    Winding system

    Manual-wind

    Known calibers

    Omega 611 and 613

    Known dial namesSeamaster 600 and Genève
    Case materialsStainless steel, or gold-plated with stainless steel caseback
    Dial layoutApplied indices with date at three

    What it was built for

    The 136.011 was built as a manually wound, date-equipped watch for daily use rather than as a large sports watch. Its 34 mm case excludes the crown, so the proportions read as restrained even when the dial has strong sunburst brushing. Applied baton indices and an applied Omega logo give the face depth, while the date at three makes this a more practical choice than a time-only mid-century dress watch.

    Both caliber 611 and caliber 613 occur in the reference, and both are manual-wind movements. That means ownership includes winding the watch by hand rather than relying on wrist motion. The known 1966-1969 span also places it firmly in Omega's late-1960s design language, with straight stick hands, compact proportions and restrained dial furniture rather than a thick bezel or a complicated case.

    Where the value sits

    The dial carries the widest value spread. An even silver sunburst surface with legible printing and intact applied indices sits ahead of heavy reddish spotting or dense stardust-like speckling, even when the damaged dial remains original. A redial is worse: originality of the metal case cannot recover the value removed by refinished printing, and a service dial remains a genuine replacement rather than the dial with which the watch left the factory.

    Case material creates the next buying decision. Stainless steel avoids the irreversible wear-through seen on gold-plated cases, especially around lug edges and other contact points. Case definition matters more than surface shine: softened lugs disclose polishing, while a crisp hippocampus medallion can support the overall condition judgement on Seamaster 600 examples. The service history is unknown unless documentation accompanies the individual watch, and timekeeping from a past test does not establish its present mechanical state.

    Where to start

    Start with a steel 136.011 carrying an evenly aged silver dial, then choose between Seamaster 600 and Genève wording on the strength of the individual watch. Neither name compensates for a refinished surface, mismatched hands or a rounded case. Between a clean Genève and a damaged Seamaster 600 at the same level, take the Genève - the shared reference, date layout and manual-wind construction matter more than the model script.

    A character dial can still make sense when the damage is even, the printing remains legible and the discount is substantial. Heavy speckling, darkened lume and oxidised hands must be described plainly, not bundled into patina. Confirm that the movement is caliber 611 or 613, that the date sits at three and that the case material matches the caseback construction. Those checks reduce the risk of a franken assembled from period-correct parts that never shipped together.

    Dating this watch

    Serial range / caliberYearNote
    1,000,0001902approximate, ±1-3 years
    2,000,0001908approximate, ±1-3 years
    3,000,0001912approximate, ±1-3 years
    4,000,0001916approximate, ±1-3 years
    5,000,0001923approximate, ±1-3 years
    6,000,0001925approximate, ±1-3 years
    7,000,0001929approximate, ±1-3 years
    8,000,0001935approximate, ±1-3 years
    9,000,0001939approximate, ±1-3 years
    10,000,0001944approximate, ±1-3 years
    11,000,0001947approximate, ±1-3 years
    12,000,0001950approximate, ±1-3 years
    13,000,0001952approximate, ±1-3 years
    14,000,0001954approximate, ±1-3 years
    15,000,0001956approximate, ±1-3 years
    16,000,0001958approximate, ±1-3 years
    17,000,0001960approximate, ±1-3 years
    18,000,0001961approximate, ±1-3 years
    19,000,0001962approximate, ±1-3 years
    20,000,0001963approximate, ±1-3 years
    21,000,0001964approximate, ±1-3 years
    22,000,0001965approximate, ±1-3 years
    24,000,0001966approximate, ±1-3 years
    25,000,0001967approximate, ±1-3 years
    26,000,0001968approximate, ±1-3 years
    28,000,0001969approximate, ±1-3 years
    31,000,0001970approximate, ±1-3 years
    32,000,0001971approximate, ±1-3 years
    33,000,0001972approximate, ±1-3 years
    35,000,0001973approximate, ±1-3 years
    37,000,0001974approximate, ±1-3 years
    39,000,0001975approximate, ±1-3 years
    40,000,0001976approximate, ±1-3 years
    41,000,0001977approximate, ±1-3 years
    42,000,0001978approximate, ±1-3 years
    43,000,0001979approximate, ±1-3 years
    44,000,0001980approximate, ±1-3 years
    45,000,0001982approximate, ±1-3 years
    46,000,0001984approximate, ±1-3 years
    47,000,0001985approximate, ±1-3 years
    48,000,0001986approximate, ±1-3 years
    49,000,0001988approximate, ±1-3 years
    50,000,0001990approximate, ±1-3 years
    53,000,0001993approximate, ±1-3 years
    54,000,0001995approximate, ±1-3 years
    56,000,0001996approximate, ±1-3 years
    58,000,0001998approximate, ±1-3 years
    60,000,0002000approximate, ±1-3 years

    Dating data comes from our decoder tables; treat years as approximate.

    Decode your serial number with our free lookup tool

    What to check before you buy

    • Dial name and layout: Reference 136.011 is known with both Seamaster 600 and Genève wording. The established layout uses applied indices, an applied Omega logo and a date window at three, so the model script must be judged with those elements rather than alone.
    • Movement caliber: The movement should be a manual-wind Omega caliber 611 or 613 based on handled examples. A caliber outside that pair is not supported here and may indicate a married or franken watch unless separate evidence establishes the configuration.
    • Case construction: Known cases are 34 mm excluding the crown and occur in stainless steel or gold-plated form with a stainless steel caseback. Check for plating loss at lug edges and softened lug profiles, as neither can be corrected without further alteration.
    • Dial ageing and printing: Even silver sunburst surfaces, heavy speckling and reddish degradation all occur, but ageing does not excuse altered printing. Crisp text on a damaged original dial is preferable to a smooth redial, while a service dial is genuine but not original to the watch.

    Other 136.011 examples we auctioned

    5 Omega 136.011 auctioned

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    Frequently asked questions

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