1964-1965 New York Worlds Fair Neutron Irradiated Mercury Dime KM.793.1 1 mm Edge Type Reeded

1 mm Edge Type Reeded Subject Vasco Nunez de Balboa Description Obverse Standing figure with arm on shield Description Reverse Armored bust left Designer Obverse Roberto Lewis Designer Reverse William Clark Noble

Very sarce

Mintage: 20

Medals issued by William Penn Commemoration Committee

Oval portrait of an Indian maiden with large bow to right

1964-1965 New York Worlds Fair Neutron Irradiated Mercury Dime KM.793.1 1 mm Edge Type ReededHere 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