I just checked mine today and the reverse on my 2014-D has a round hole or pit just above a star directly over the "O" in Dollar on the bottom of the reverse of the coin (2014-D silver Unc). This hole is slightly smaller than the star, but its very nearly round and looks like a small shallow drill hole. I've never seen anything like this on a coin I received directly from the mint. Its very strange to me. Also, I the obverse I noticed the bottom of the numbers in 2014 appear to be polished (mainly seen on the 2 and 0 in 2014). The silver color on these lower areas look like highly polished, like the reverse proof. Its strange.