That unique brand of American right-wing crazy applied to the newly released dime design in the mid-1940s,
The dime was released to the public on January 30, 1946, which would have been Roosevelt’s 64th birthday. Sinnock’s design placed his initials (“JS”) at the base of Roosevelt’s neck, on the coin’s obverse. His reverse design elements of a torch, olive branch, and oak branch symbolized, respectively, liberty, peace, and strength.
Controversy immediately ensued, as strong anti-Communist sentiment in the United States led to the circulation of rumors that the “JS” engraved on the coin was the initials of Joseph Stalin, placed there by a Soviet agent in the mint. The Mint quickly issued a statement denying this, confirming that the initials were indeed Sinnock’s.
(Source: Wikipedia)