I just don't understand why the mint even attempted to change the errors. Its not like they are that noticable anyways.
Wide AM's are used on the proof reverse. The dies were never intended to be used for business strikes but they were.
I am pretty sure that this was a long in coming change to make identifying Proof Cents from Business Strike Cents easier! There have been some Business Strike Cents produced throughout the history of the Lincoln Cent...especially in the 1960's, that are hard to tell from Proof Cents. If I am wrong about the reasoning behind the change, I hope that someone will provide the correct information as it is good to know! Frank
It probaly also result from suble changes intended to help fix striking problems. The proof coins and the business strikes are slightly differnt in style and relief because the different striking speeds and pressures results in differences in the way the metal of the planchet flows into the dies. The designs of the two types are tweaked to create the best impression for each process.
