The 1990-D error coin is a fascinating piece for collectors intrigued by U.S.
Mint mistakes. Struck at the Denver Mint, these coins can feature a variety of errors, including off-center strikes, double dies, or missing design elements.
One notable example is a 1990-D Lincoln Cent struck on a bronze planchet, a leftover from pre-1982 composition. Such rare errors are highly sought after due to their scarcity and the story they tell about minting mishaps.
Depending on the error type and coin condition, values can range from modest premiums to hundreds of dollars, making this a truly special find for collectors.
