use his HJ cup to drink or eat from? Or is it “just” a sentimental keepsake? I think that is something that I couldn’t sell even if I could get a nice chunk of money for it. Certainly not while your dad is still alive. And definitely not for as little as $50. But now you have a new fun detail to this little piece of family history — that he took the cup, not her. You know what is truly valuable? Learning details like that before they are buried forever.
I don’t remember the Disney thing but people’s capacity to believe/hope something like that is true seems unlimited. One of my mom’s favorite TV shows was Antique Roadshow. She had a lot of junk (especially dishes!) in her house that she hoped was valuable.