Good afternoon, wondering the rarity of this coin, poss value? Thank you so much! Dottie Sorry pictures are not so good So sorry I didn't add pics, will attach now
Ten cents. Prior to 1980, the Philadelphia mint didn't use mint marks. Starting in '80, the P mintmark was added. Of course, D is used for Denver.
And is because the example shown is a proof, which is a method of manufacturing designed for the collector market as opposed to every day commerce. In particular, do notice the mirrored fields and greater detail of the coin shown in Michael's post above.