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Help identifying my 1971 Omega Genève - solid 18k gold with original bracelet (Barcelona)

Barcelona001
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Hello Omega experts,

I'm looking for help identifying and estimating the value of a very specific Omega Genève watch I own. It was originally purchased new in Barcelona in 1971 by a family member.

Details:

  • Model: Omega Genève Automatic
  • Year: 1971
  • Case: Solid 18k yellow gold (hallmarked 750)
  • Bracelet: Original Omega 18k yellow gold mesh bracelet (also 750 stamped)
  • Total weight: 68 grams
  • Estimated pure gold content: approx. 63 grams
  • Dial: Silver with black indices and date window at 3 o'clock
  • Movement: Automatic (unopened so far - no reference or caliber yet)
  • Condition: fully working

I’ve searched extensively online (Chrono24, eBay, WatchCharts, etc.), but I haven't found the exact same combination - most Genève models from that time are gold-plated or have leather straps. This one is full gold with matching 18k bracelet, which seems very rare.

If anyone can help identify the correct reference number, movement caliber, production data, or has seen another example like this, I would greatly appreciate it. I’m also interested in a realistic valuation for insurance or potential sale to collectors (not melt value).

Thanks in advance!

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padders
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Unfortunately with the price of gold as high as it is, this kind of dress watch is basically worth the metal value, particular on models with integrated bracelets with damage like here. Were in on a leather strap or removable bracelet it would command a premium over melt but the welded on bracelets are a problem, for one they have a very narrow fitment range. They were sized for the original owner.

Above you say the pure gold content is 63g. That is a tad optimistic. In fact, if the gross weight is 68g, you will lose maybe 15-20g for the movement, dial, crystal and hands (which are not gold). Then you need to factor in that 18K gold is only 75% pure. In fact you have more like 35-40g of 24K gold present. Which is still worth a lot, like £2,750/€3,250 but maybe not as much as you thought.

No idea about the case number, but the movement used is probably the 565 or perhaps one of the 101X flavours. Both were seen at the start of the '70s

Edit: I’ve tweaked my numbers as I was I tad pessimistic earlier.
Edited:
 
Dan S
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The information you want about reference number, etc. is inside the watch if you have it opened up. As @padders noted, this style of watch is not particularly desirable at the moment, but it's a nice dress watch and with patience, you could certainly find a buyer for a modest premium over melt value.

BTW, actual melt value is approximately 0.85*0.75*(weight in grams)*(gold spot price per gram).

I suspect the movement/dial/hands/crown weigh at least 20g.
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