Discover rare 1990 penny errors, their values, and how apps like CoinKnow help identify valuable coins instantly.

While most coins from the 1990s are still worth face value, certain rare examples from that decade have become numismatic goldmines. The key lies in knowing what to look for among your old pocket ...

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 ...

DAD-of-one Alun Barker spotted a rare 20p coin on eBay and snapped it up for £50 – now experts have said it could be worth over £2,000. Alun, 43, who lives in Hull, is the only person known in the ...

A SAVVY dad-of-one snapped up a rare 20p coin that's set to make him £1,800. Alun Barker, 45, who lives in Hull, is the only person known in the world to have the ultra rare piece dating from 1990.