Ever sifted through a pile of old coins from your family’s attic and wondered if one rusty penny could pay off your next vacation? The 20th century churned out billions of one-cent pieces, but a select few stand out as true gems—thanks to low production numbers, quirky mistakes during minting, or ties to big historical … Continue reading 11 Rare Pennies of the Twentieth Century That Could Make You a Numismatic Millionaire