Thanks - I didn't know that at all!--in case you didn't know, during WWII there was an extreme shortage of copper, so much so that pennies were made of steel for one year (maybe two, been too long since I've thought about it) so that copper could be diverted for making shell casings.
Steel went into tanks: the pennies were zinc.--in case you didn't know, during WWII there was an extreme shortage of copper, so much so that pennies were made of steel for one year (maybe two, been too long since I've thought about it) so that copper could be diverted for making shell casings.
And now they are mostly Zinc again!Steel went into tanks: the pennies were zinc.