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Case back looks very nice. Is that a sparkle dial?
There are a few similar 166.067 in Japan on eBay now e.g. https://www.ebay.com/itm/284530541299?epid=26048422478&]
$520 including the bracelet is a no-brainer. 36mm Omega with a great automatic movement from their golden age?
Bracelet looks a classic omega bor 1036/11 to me, added later and at least 10 years older.
Correct bracelet for this reference is 1037/614.
Case back looks very nice. Is that a sparkle dial?
There are a few similar 166.067 in Japan on eBay now e.g. https://www.ebay.com/itm/284530541299?epid=26048422478&hash=item423f5782f3:g:0XwAAOSwz5thkwIV
https://www.ebay.com/itm/265346179156?epid=26048422478&hash=item3dc7dd6054:g:o0UAAOSwk-thXPE5
https://www.ebay.com/itm/265331780718?epid=26048422478&hash=item3dc701ac6e:g:XRAAAOSwh6BhUR5t
https://www.ebay.com/itm/284513796061?epid=17043764889&hash=item423e57ffdd:g:K04AAOSwXt5hgW8Q
https://www.ebay.com/itm/265211977612?hash=item3dbfdd9f8c:g:gSUAAOSwEqNg2nL1
There's also this 166.010 which would be my preference:
https://www.ebay.com/itm/175058643384?hash=item28c24ee9b8:g:ShsAAOSwxdthswFu
I think you should shop around unless you're in Japan for a short duration, what's the story there? I'm curious, there's also a thread here about a member exploring watch shops in Japan, it was a beautiful journey
I think it was this: https://omegaforums.net/threads/my-travels-to-japan-and-my-search-for-nina.54166/
$520 including the bracelet is a no-brainer.
At this point, as you are able to handle the watch in person, I’d do my final due diligence with the watch in hand, rather than pouring over photos where the angle/light etc may cloud the details.