I started not long ago going through my change reserves and scored couple good finds... I have also came across off centered struck coins and other error coins.... Here's a picture of my most recent, a 2000 Penny with the wide AM... My second most recent was the 1982 small date, no mint mark... Happy Hunting
Not a true Off Center.. Just a Misaligned Die Strike http://www.lincolncentforum.com/misaligned-die-errors-vs-off-center-strikes/
If you find a 1983 Copper Cent that would be a Transitional Mint Error. It would weigh 3.11 grams only 2 or 3 have ever been actually found