This is a pearl of a sold one, like v6f if you need to compare. I usually distinguish zf from v6f in crownguard bevels and chamfer on the bottom side of the bezel.
I would suggest checking the Sales section. Prices go up and down so look at probably the latest or last 2 sales of the same watch and take note if any extras have been included in the price (servicing, mods, extras like straps, etc) and adjust your price accordingly. Good luck!