The Newman Numismatic Portal aggregates auction appearances and realized prices for the 1955 doubled-die cent across multiple firms, giving collectors and researchers a way to track how values have ...

Add Yahoo as a preferred source to see more of our stories on Google. Are old pennies worth money? Here's how to check if you have a rare penny Penny production in the U.S. is grinding to a stop. More ...

Some of the rarest and most valuable coins in U.S. history owe their worth to minting errors that slipped through unnoticed. Coins like the 1943 Copper Penny, struck in copper instead of wartime steel ...

Most people treat spare change and crumpled bills as an afterthought, something to toss in a jar or hand over without a ...