It was struck in Denver "D" and it was graded MS67 (Mint State) In nice uncirculated condition and has a nice luster. 1956 dimes had 90% silver and 10% copper. See the last pictures for errors, Double Die on the Obverse "DDO" I don't know why ICG missed it, under magnification I found these, double "LIBE" in LIBERTY and the date "1964" is double, several others, see pictures. $200