1931 10C, FB MS64FB Certification #21515616, PCGS #4983
According to the June 1934 issue of The Numismatist (p. 416), collectors could still purchase Uncirculated 1931 Dimes for "the face value of the coins and an amount sufficient to cover the mail charrges by first-class mail."
Adolph Alexander Weinman
90% Silver, 10% Copper
The United States of America