These are just a few of the MinT ErRoR cOiNs in my personal collection
I've been collecting coins for about 48 years now! Recently I have branched off into a rather rare type of coin called "The Mint Error Coin". There are many different kinds of Mint Error Coins but my favorite type of mint error is the Off Center Strike, and The Off Center Double Strike. Below are some photos of a few of my off center strike and my off center double stike USA coins
The best place to find off center strikes IMO is to go to a bank in your area and buy a whole bag of coins, never opened, straight from the federal reserve via the mint. Start out small and get an unopened bag of fifty dollars worth of penny's, sort through the whole bag, keep what ever errors you find and replace the one cent you kept with another (normal) penny... in other words no matter how rare the error you find, and no matter what that error coins value is, you'll only ever pay one cent for each coin by buying the whole bag of pennies and sorting through it.
check out the photos
Jim Nasium is the Author of: Try It You'll Like It found in Error Trends May 25th, 1989 on page 15 AND "To Measure Or Not To Measure" found in Error Trends Oct. 25, 1988 on page 27 AND in ERRORSCOPE Nov. 1989 Vol. 6 #4 on page 7 you can read an interesting artical on how to measure off center strikes I wrote called "Try It...You'll Like it" with photos...