I'm a lucky guy. My wife picked up a 1928 A silver certificate, a 1919 Buffalo 5¢, a 1922 Peace dollar and two Ikes. A 1974 S proof and a 1971 proof. A nice haul.
Just as interesting is 1920 irradiated dime. Being a Cold War / Baby Boomer I couldn't resist.
There are many encased dime pieces in the marketplace from the American Museum of Atomic Energy. The pieces are encased in a round 25mm holder with a raised rim and a plastic cover over the dime. The dime does not show through the back, which is aluminum colored.
The purpose of the dime irradiated at the American Museum of Atomic Energy, in Oak Ridge Tennessee, was to provide a dramatic demonstration of the principle of neutron activation for the public.
Wow, that is pretty cool! I had never heard of these dimes. (I'm glad I read the article you provided! I almost starting asking a bunch of questions, all of which were covered in the article!)
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