While going over a bank roll of pennies today, I found a nickel plated 1956-D penny. It looks like it was in fairly decent shape when it was plated, so I assume it was done quite a while ago. Any idea why someone would have done this? Was there a reason, or was it just a "because he could" thing? Or a high school experiment? Or... ??? I've never seen one before. The closest thing to it (and "closest" isn't even close) was a cent with some kind of white metal rim surrounding the edge, maybe silver or aluminum (I don't have any acid to test for silver and didn't want to use lye to see if it was aluminum, and it was "just a penny" so I didn't really give it much more thought, figured it was probably part of some kind of locket/charm/necklace/whatever). Maybe someone plated this one for a similar reason? (Some kind of cheap homemade (or factory made?) jewelry?) I am not deeply personally invested in finding out the reason, just mildly curious since it's such an oddity (at least for the coins I've searched.) FWIW (mainly to obviate the need for any speculation or questions regarding its composition), it's definitely nickel -- not mercury or silver, like the ones I made when I was a kid (mercury for the mercury ones, spent photographic fixer for the silver plated pennies). It's not zinc, either - it's magnetic, but not nearly so much as the pure nickel Canadian coins, it's not solid (besides the weakly magnetic effect, it's weak around the edge, and rubbed/flaked off in that area, exposing the bronze coin).