What is the value of an unstruck US cent?

Answer 1

Well, honey, an unstruck US cent is basically worth its weight in copper, which is about 2.5 grams. So if you're looking to cash in, you might want to start a collection and wait for the price of copper to go up. But hey, don't expect to retire off of it anytime soon.

Answer 2

Billions of pennies (cents) are struck each year at extremely high speed so errors are more common than you might think.

A coin blank that made it through the Mint without being struck is often called a "flan". If the flan is from a modern zinc cent (weight 2.5 gm) it's worth about $1. If it's from an older bronze cent (3.11 gm) it's worth about $2 if the coin's rim is raised, and $3 if the edge is flat.