No living person may appear on a U.S. coin. While 2016 would have been Carter's year, as he was between Ford and Reagan, being that he's still alive means his dollar coin will have to wait until after he passes.
a quarter
Carter will eventually be featured on a presidential dollar coin, but not until after his death.
Carter was in the Class of 1946.
1976
The US dollar of 1976 when Carter was elected was worth 64.5 cents when Carter left office in 1981, according to the related link given below.
Jimmy Carter.
Jimmy Carter
October 1, 1924
He never was!!
he's still alive
1976 & 1980
1984