American Museum of Atomic Energy Neutron Irradiated 1961 Roosevelt Dime Coral - This coin is absolutely

- This coin is absolutely a cast copy

1939-S Washington Quarter - PCGS MS 63 - Choice Uncirculated

Two of the four have very a minor chip on the reverse (pictured) which would not be visible once mounted

1992-S Olympic Baseball Commemorative Silver Dollar - NGC PF 69

American Museum of Atomic Energy Neutron Irradiated 1961 Roosevelt Dime Coral - This coin is absolutelyHere 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