The first 1982 D small date copper was found in 2016, the second in 2019. I have to admit the possibility of more in some change jar that has been accumulating for years, I've got a jug of change that has been gathering for at least 20 years. I guess there's nothing wrong with looking as long as the person doing so knows the odds, and it's for the thrill of the hunt, not to get rich quick. If I was going to search, which I'm not, the route I'd take would be to hit people up for their old accumulations.