1942‑D Lincoln Steel Penny Error: Why the “Over S” Variety Is So Rare & Valuable July 23, 2025July 23, 2025Debbi During World War II, the U.S. Mint experimented with steel pennies in 1943 due to copper shortages. However, minting resumed with copper in 1944—but a curious wartime steel penny bearing the 1942‑D date and an Continue reading