The story behind the coin
The math lined up perfectly. In 2009 Abraham Lincoln would have turned 200, and the coin that bears his profile — the Lincoln cent — turned 100 the same year. Congress saw the coincidence and acted on it. Buried inside the Presidential $1 Coin Act of 2005 was a provision to mark both anniversaries at once, on the humblest coin America makes.
The idea was bigger than a single commemorative design. The Mint would strike four reverses in one year — the reverse being the "tails" side — each showing a different stage of Lincoln's life, released roughly three months apart. No U.S. circulating coin had ever rolled out four backs in twelve months. For a single year, the penny became a four-part biography you could collect from your spare change.
It was a one-year detour by design. The Lincoln cent had worn just two reverses in its century: the wheat ears of 1909–1958, then the Lincoln Memorial of 1959–2008. The 2009 quartet interrupted that run, and in 2010 a fifth, permanent design — the Union Shield — took over. So the bicentennial cents are bracketed cleanly: not Wheat, not Memorial, not Shield. Their own small chapter.
