Considering 1960s Omega Seamaster Cosmic ref.136.016

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Hello everyone,

I am looking at adding a vintage Omega to my collection and would really appreciate your expertise and critical eyes before buying. As recommended in the forum guide, this is a watch I am currently considering purchasing (not yet owned), so please be as candid and thorough as possible regarding any flaws, non-original parts, or red flags.

Watch & Listing Details
  • Model / Reference: Listed as an Omega Seamaster Cosmic / Genève Cosmic in stainless steel (approx. 36–38 mm, circa 1961–1970).
  • Source / Seller: Found on the Scandinavian auction platform Tradera from a private seller based in Copenhagen, Denmark.
  • Asking Price: 10,605 SEK (approx. €940 / $1,020 USD) Buy It Now (or 11,137 SEK with buyer protection).
  • Claimed Condition Provenance: Described as in "very good condition" with minimal signs of wear. The seller states it comes with an authenticity certificate issued by a local watchmaker workshop in Copenhagen (Frederiksberg Urmagerværksted).

What I Would Love Help With:
  1. Originality of the Bracelet & End Links: Is this bracelet/clasp period-correct and authentic Omega, or an aftermarket / marriage addition?
  2. Dial & Hands: Does the dial appear factory-original, or do you detect any signs of a redial / refinishing or mismatched handset?
  3. Crown & Case: Does the crown appear correct, and how does the case finishing look (original lines vs. over-polished)?
  4. Fair Market Value: Given the asking price of ~10,605 SEK (~€940), does this represent a reasonable market price for this model and condition, or is it priced on the higher side?

 
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I don't see anything to be concerned about, and it is a good looking watch. The corrosion on the hour indexes at 12/9/3 is unfortunate though. In general, I think the price is a bit high (at least for the US, this is a $650 watch here), but otherwise fine.

I DO think the back of the case (and probably the whole case!) saw a bit of a polish, the back is missing the 'Tool 105'number on the back, which I would expect.
 
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136.016 tool105 is the 33mm size compared to the bigger 36mm 166.026 tool107. The caseback font does look alittle different then what Ive seen but there might be variations of it. Also the 33mm version comes with a high polish case compared to the brush of the 36mm

 
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I don't see anything to be concerned about, and it is a good looking watch. The corrosion on the hour indexes at 12/9/3 is unfortunate though. In general, I think the price is a bit high (at least for the US, this is a $650 watch here), but otherwise fine.

I DO think the back of the case (and probably the whole case!) saw a bit of a polish, the back is missing the 'Tool 105'number on the back, which I would expect.

+1 but I’d add that if you like it, you should negotiate the price with the seller
 
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+1 but I’d add that if you like it, you should negotiate the price with the seller
Yes, 1000 USD is a bit too much for what I had in mind for this time being.
 
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136.016 tool105 is the 33mm size compared to the bigger 36mm 166.026 tool107. The caseback font does look alittle different then what Ive seen but there might be variations of it. Also the 33mm version comes with a high polish case compared to the brush of the 36mm

Thanks for showcasing!