Is this a D mint mark on this dime? and is this a 2 over 1? As always, comments are welcome, and thanks for your assistance.
I see the spot but D's have never been that small. i think its debris on the die. Post a closeup of the date if you wish, but I do not see an overdate. Where do you see traces of the one?
On Merc dimes, the mintmark is almost always well-struck and remains on the coin for a long, long time. If you look at examples of 1916-D's, you'll see the D is clearly visible on even AG3 examples. In short, don't squint around looking for a MM on a Merc dime... flip it over, and if it's not there, it's not there.
