During World War II, due to a shortage of copper, the US Mint switched to making Lincoln cents from zinc-coated steel. However, a few bronze cents were mistakenly minted in 1943, making them extremely rare and valuable.
Issued to commemorate Nelson Mandela's 90th birthday, this coin features a portrait of the anti-apartheid leader. A limited number of these coins were minted, making them sought after by collectors.
Issued to mark the handover of the Olympic Games from Beijing to London, this coin features the iconic Olympic flag being passed between hands. Its rarity and significance to Olympic history contribute to its value.
This coin is known for its distinct doubling of the date and lettering, caused by a minting error. Only a small number of these coins were produced before the error was corrected, making them highly valuable to collectors.
This coin is renowned for its depiction of a pineapple, a symbol of hospitality, and its relatively low mintage numbers, which contribute to its value among collectors of exotic coins.
This coin is highly sought after due to its low mintage and its status as one of the key dates in Canadian numismatics. Its scarcity and historical significance make it a valuable addition to any collection.
In 1983, the Royal Mint accidentally minted a small number of 2p coins with the old "New Pence" inscription instead of the updated "Two Pence." These error coins are now highly sought after by collectors.
A die error during the minting process led to some Wisconsin state quarters being struck with an extra leaf on the ear of corn depicted on the reverse side. These error coins have become highly collectible due to their uniqueness and rarity.