Advice on selling needed

[TheScribbler]

I'm sure this has been discussed a zillion times but can you advise me on the best/safest way (and what to avoid) to sell a Rolex?

I'm not disclosing the model at this time, other than to say it is a vintage, high-value watch (in case that makes a difference). I am right at the beginning of my research and this forum seems like an excellent place to start.