Nothing. No US nickels have been produced with anything other than just a plain edge.
The right side
Since 1938, Thomas Jefferson, the third president of the United States has been on the obverse side of the Nickel.
the head on the headside of the nickel is thomas Jefferson
A dime is smaller than a nickel. A nickel is worth less than a dime. A dime has a ridged side, while a nickel is smooth and thicker.
a nickel
East Side West Side - 1963 The Passion of the Nickel Player 1-21 was released on: USA: 9 March 1964
The presence of the word Monticello under the building indicates it's an image of Thomas Jefferson's home on the other side of a nickel.
Thomas Jefferson, 1938 to date.
It's a 1902 Liberty Head Nickel with a value of $3.00-$5.00 in average condition
A 1999 nickel is a five-cent coin minted by the United States Mint in 1999. It features Thomas Jefferson on the obverse side and Monticello on the reverse side. It is composed of 75% copper and 25% nickel.
It's the same: Nickle.
Monticello, Thomas Jefferson's plantation home.