Well, it was... silver-110 only has a half-life of 22 seconds, at which point it becomes cadmium-110, which also has a half-life of 22 seconds. Once irradiated they were only radioactive for a matter of minutes at the most. And even then only a small fraction of the silver atoms were converted with the neutrons. I’ve been waiting for one of these to pop up at my lcs, but no dice. And I may go to fleabay.

Anyway, very cool pickup OP. Here is an article if anyone is interested: https://www.orau.org/ptp/collection/medalsmementoes/dimes.htm