As an owner of both this watch and a Ref. 167.005, I can tell your there are major differences between the two. The cal. 55X/56X version are larger, thicker and the dial has more of a 3D effect with the facets.
The earlier models are also a bit more expensive, all other things being equal.
The price on the 168.0065 is reasonable for the condition. The bracelet is a plus, but it was almost certainly added after original purchase. If Omega branded, it adds some value.
Hope this helps,
gatorcpa
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