I have, actually -- I had a co-worker gift me with her grandfather's fountain pen because it was known that I used them at work. I looked it up while she was at my desk and the first page that came up indicated it had a value in the $200-$300 range. I made sure she saw that and asked, "Are you sure you want to just give this away?"
She said yes, because she knew that I would appreciate it, restore it, and take care of it.
Wow.