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

Brits have been told to “always” check a certain 50p coin in case it is a highly sought after version. This piece could be ...

The 1972 penny remains one of the most exciting coins for error hunters and collectors alike. This year produced some of the ...

Among enthusiasts, particular coins hold considerable worth. This usually relates to their rarity, with specimens from ...

The collector revealed: "A gold-proof Kew Gardens 50p has recently sold for £6,800 at the Royal Mint online auction. The ...

With this in mind, an authority has revealed that one particular 50p might be "worth a fortune". In a clip posted on social ...

A coin expert has identified two rare £2 coins that could be worth up to £1,030 combined if they have specific minting errors ...

Explore the most valuable 1970 quarter errors, including overstrikes, doubled dies, off-center strikes, and wrong planchet ...

Turns out these common minting mistakes from 1979 are worth up to $5,000 - and you might have one sitting in your change jar ...

The error coin market has exploded in ways that would make even seasoned collectors' heads spin. What started as casual ...

Explore the 1967 quarter error list, including DDO, DDR, off-center, wrong planchet, and rare silver errors, plus values and identification tips for collectors.