I found this penny. It's the exact same size of a dime. But it's not a perfect cylindrical shaped coin. Any thoughts please.
Heard a story that kids in the 50's would file down a cent to the size of a dime to put in the 10¢ soda machine.
with that. I've heard the same thing. I also heard the kids used chemicals in chemistry class to eat away at the copper until it was the size of a dime.
One the things that facinate me about coins is the history and stories behind each one. If a penny could talk.
Another way to shrink a coin, Weight will be OK, thickness increases, DANGEROUS! https://www.zmescience.com/science/physics/coins-shrunk-electromagnetic-blast-063654/ Jim