Identify the reference, not just the model
Omega families contain meaningful differences in movement, size, bracelet, dial and production period. Put the reference number, case size and visible configuration at the top of your file so any valuation or offer begins with the correct comparable set.
Let service history do its real job
A credible service invoice can lower the next owner’s near-term uncertainty, especially where pressure testing, chronograph function or movement work is involved. It does not automatically add its full cost to the asking price, and disclosed replacement parts may change collector appeal.
Make completeness specific
Separate the watch, bracelet, removable links, warranty card, box, manuals and service paperwork. A missing card is different from a missing link, and a generic box is different from a matching record. Clear disclosure is more useful than claiming a vague full set.
Choose the selling route deliberately
A direct buyer can trade upside for speed and inspection certainty. A private sale can broaden the buyer pool but requires stronger documentation and payment controls. Consignment can fit a more selective watch when timing is not the main constraint.
Describe the watch honestly
State what you know about wear, polishing, timing, water resistance and recent work. An accurate description protects the price discussion and makes it easier for a serious buyer to say yes.