Check the listing for details. 1994 D Improperly Annealed Dime Error Brown Copper Color. Color: BN, Condition: Ungraded, Made in United States. Listed at 350.00 USD. The product is a 1994 D Improperly Annealed Dime Error coin in brown copper color. This error coin features a unique characteristic of being improperly annealed, giving it a different appearance compared to regular dimes. Minted in Denver, United States, this coin is a circulated business strike Roosevelt Dime from 1994. The coin is uncertified and ungraded, making it a desirable piece for collectors of error coins.