Bottom line: The 1943 D-Bronze penny is the Holy Grail of wheat pennies. There is one that we know of in existence that wasn’t made in error, but how it came into being is the topic of much speculation among coin collectors.
According to authors and coin collectors, John Wexler and Kevin Flynn: “The 1943-D bronze cent was owned by a former Denver Mint employee who is believed to have struck it. Speculation has it that the person hand-fed a bronze planchet into the coining press, struck it twice to bring up the design, then kept it.”
Another coin collector and writer, Dr. Sol Taylor, sheds a little light on who that employee may have been: “This specimen traces its origins to a deliberately made coin. [It was] probably by John R. Sinnock, chief engraver of the U.S. Mint at the time [and] was later discovered in the estate of a woman Sinnock was dating in the 1940s when [they] both lived in the small town of North Tonawanda, New York.”
For more valuable pennies, check out “These 20 Most Valuable Pennies Are Worth $5.5 Million.”