Better make sure they are pre-1982. Since 1982 pennies have been copper plated zinc.Originally posted by ZmOz:<br /> Pennies are what's handy when someone needs a scrap of copper to test something like that.
Not to mention cheaper.Originally posted by telmanmn:<br /> Many differnet methods to electroplate copper pennies. Zinc is easier than silver. It sounds like that is what happened.
Were the steelies non Magnetic? I know they wouldn't work in a bubble gum machine.Originally posted by JB:<br /> The "steelies" were minted in 1943 only. That same year nickles were silver alloy with no nickel in them.