appears very similar to the 1979 double date.
I'm guessing that with more than a billion made some dies were pushed to the limits.
1999 1 cent date doubling
Re: 1999 1 cent date doubling
You can see this error here :
http://www.coinsandcanada.com/coins-pri ... -1965-2012
http://www.coinsandcanada.com/coins-pri ... -1965-2012