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25c - Massachusetts (Silver)
$2 errors are few and far between to be sure
Monogrammed "R"
date below Description Reverse Standing Liberty
American Museum of Atomic Energy Neutron Irradiated 1960 Roosevelt Dime Argentina 25c - Massachusetts (Silver)Here is an excerpt from a press release from the American Museum of Atomic Energy released in the mid 1950s regarding these dimes: "One of the most popular exhibits in the American Museum of Atomic Energy is a "dime irradiator." To date, more than 250,000 dimes have been irradiated, encased in plastic and returned to their owners as souvenirs. The irradiator works as follows: A mixture of radioactive antimony and beryllium is enclosed in a lead
