But they do. I found a double die penny once and before I could ever get it appraised it was stolen. I was a stupid 12 year old kid and I let a "friend" borrow it and his house was conveniently robbed. The penny had been in circulation for a long time when I found it. It was badly misshapen and I could not understand how it ever got out of the mint. It was probably at the end of a roll and somehow just slipped through. Unfortunately I never got it documented so I could not claim it if it showed up somewhere today.
That’s one of those things you’d like to know the truth of before you kicked the bucket. Find thee ‘friend’ and ask. After all these years he might be honest.