Pateks are known for holding their values better than any other brand. That said, there is a staggering range of models made over the years and prices vary based on rarity as much as anything. You might sell plain gold wristwatch or pocketwatch (on the aftermarket) for something like $2-3K. A rare complication (perpetual calendar repeater, for example) could go for over a hundred times that. There is no difference in general quality, just the amount of work in making the watch and scarcity. If you happen to be in New York, you can bring the watch into Sotheby's or Christie's and the watch departments will be glad to evaluate it. They always love to have new Pateks.
