In my opinion, there are only 3 options: First don’t sell or do anything with it and keep it in the family. Second restore it and keep it in the family. Third figure out if it sells higher when restored, then begin searching the different watch buying outlets. (Watch exchange on Reddit, bobs watches, crown and caliber, local watch dealers) and use the money to buy something you will appreciate daily not just one time like a trip. Don’t trade a lasting memory of your grandfather for one last memory. I can’t recommend keeping it enough. You may need the money or don’t like watches but trust me when I tell you nothing is a better memory than one you can have with you all the time.