I've stated this before to others and I will tell you now.. Just because a coin looks different, odd, strange or weird does not automatically make it a Mint Error. It's just environmental toning. Probably a chemical spilled on it.
You need to quit hanging around CT and spend more time in your English Class. Penny's = It belongs to Penny Pennies = More than 1 Penny So are you saying that the OP has normal, circulated coins that belong to Penny?
The 1981 is 95% copper alloy, bronze The 1993 is zinc with a very thin copper plating Someday the 81 will be worth its weight of bronze Someday the 93 will dissolve into zinc oxide dust
It's not the Spill I'm looking at or hoping you look at .. The Detail in Beard doesn't show on all the other pennies I've looked at since seeing that one , but I Appreciate it . Just looks a little different I guess .