Your mintmark is a D so it can't be an S over D or an S over S. It could be a D over D, but none of these varieties are really collectable in the circulated grades. Here are some photos for you to compare. 1954 D/D Jefferson Nickel 1954 S/D Jefferson Nickel 1954 S/S Jefferson Nickel The D/D has a loop on the inside of the D, which I don't see on your coin.
@Lehigh96 Paul, I think he is referring to the mark on the rim toward the south-southeast. @SilverCresent If that mark on the rim is what you are referring to, then I don't think it is a misplaced mintmark. I think it is just a random hit during circulation. Chris
Heh... by the title of this thread I thought you meant the value of the actual metal and I was all ready to say "about $0.041617."