The 1990 Lincoln Penny with No Mint Mark and Rim Error is a unique coin with missing faint shadows and columns. Made of copper-zinc composition with a red color, this circulated coin is a business strike type with a 0.999 fineness. The Lincoln Memorial Penny from the United States features various error elements, including a marked R and Trust variety. Despite being ungraded and uncertified, this coin holds historical and collecting value for numismatists interested in unique errors and varieties.