lol...yea i was pretty sure the year was wrong. We did experiments with them as well in high school. We'd hold them in a bunsen burner with a set of tongs until the penny would start to disfigure, then would tap the penny on the counter so that the molten zinc would splash out. Pretty cool thing to do, but not too smart now that I think about it. Molten zinc really isn't something you'd want to pop on you :-)