According to CoinTrackers, the 1955 Jefferson D nickel carries a value of $.85 to $1.35 as of 2014. Unmarked 1955 Jefferson nickels range from $1 to $2.65 or more, depending on their condition.
The 74,464,000 nickels minted in Denver include a "D" at the far right center of the coin back, while the 7,888,000 coins from the Philadelphia mint are unmarked. The coin does draw moderate interest from collectors, as rare variations with a "D" pressed over the "S" on the back may command as much as $120. The 380,000 hand-polished "proofs" issued from the Philadelphia mint have a value of up to $20.