I was thinking about finding a place to service and replace some parts of my seamaster "Sparkle" but I wanted to get an idea of roughly how much it would cost for the following: 1. Clean the case and movement 2. replace the crystal 3. replace the crown the watch is running great and has a power reserve of around 2 days if fully wound. the only flaws with the watch are purely cosmetic, which would be a scratched crystal, and the gold plating chipped off the end of the crown (See picture) is it worth it to get these minor things fixed?
You need to talk to an independent watchmaker. Cleaning everything should be part of the service. New crystal will be a known amount. Discuss crown options with watchmaker.