While we are posting Roosevelt dimes, I would like to repost this reply I made last year. Last night my wife and I had dinner in New Hope, Pennsylvania. I needed a tissue, so my wife handed me a travel pack from her purse. When I opened it up, a Roosevelt dime was rattling around inside. She asked "Is it valuable?" I immediately said no, but noticed in the dark that it was nicely toned, so I pocketed it for later. On the way home, she reminded me that Selma Burke, credited with the original design for Roosevelt's bust, lived in New Hope in her later years. We used to see her in the grocery, in fact. Here she is: Selma had submitted this design, sculpted from a live sitting with FDR, for a competition for the Recorder of Deeds office in Washington, D.C. Although the relief is perhaps too deep for coinage, this image is widely believed to be the uncredited basis for the final design by John Ray Sinnock, the Mint's Chief Engraver, who had to produce a dime design under tight deadline pressure. So to honor the local ties to Selma Burke, this ordinary dime showed up to remind me that numismatics is not always about the best or brightest coin, but about the history and context in which they were produced.
LOL It's harmless. Here is a little bit of info. The following description is from what I believe was a 1954 press release from the American Museum of Atomic Energy: "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 container. Gamma rays from the antimony are absorbed by the beryllium atoms and a neutron is expelled by the beryllium atom in the process. These neutrons, having no electrical charge, penetrate silver atoms in the dime. Instead of remaining normal silver-109, they become radioactive silver-110. After irradiation, the dime is dropped out through a slot in the lead container and rests momentarily before a Geiger tube so that its radioactivity may be demonstrated. It is then encased in the souvenir container. Radioactive silver, with a half-life of 22 seconds, decays rapidly to cadmium-110 (In 22 seconds, half of the radioactivity in each dime is gone, in another 22 seconds half the remainder goes, and so on until all the silver-110 has become cadmium). Only an exceedingly minute fraction of the silver atoms have been made radioactive." Taken from here. https://www.orau.org/PTP/collection/medalsmementoes/dimes.htm
Sure it’s AT, but when you get a set of 25 proofs from 1968 onwards for $0.11 each, it just makes it fun to have. Edit: I looked up the seller on eBay, and unfortunately my feedback was the second to last ever recorded. The account has no sales offerings and has been dormant for over a year. I actually had enough fun with these that I would have liked to see what else was available. I sincerely hope the seller did not succumb to the ravages of time.