I had a beautiful coffee mug that an older lady cow orker had given me as a going-away present one summer before I left for college. I had it for years. I took it into work as my work coffee mug and it wasn't until a library lady told me that I found out it was even more special, being Bybee pottery.
http://www.bybeepottery.com/
One day during renovation I went into my office and found my mug shattered and a very apologetic note from some poor guy who accidentally knocked it off my shelf while working in there. I let it go. He felt awful and what would be the point in replacing it?