1944-D Lincoln Penny Front
Here is another penny that some people consider to be a “mistake.” The 1944-D Lincoln penny was struck on a zinc-coated coin blank or steel planchet. In 1944, the mint started to use copper planchets again. Like most pennies on the list, this particular coin also weighed 3.11 grams.
1944-D Lincoln Penny Back
Even though there are certain coins in zinc from the Denver and Philadelphia Mints, it is believed that only a handful came from the former. As a matter of fact, it is believed that no more than ten came from there! In August 2007, an uncirculated one was auctioned off for $115,000 by Heritage Auctions in 2007.