These errors can significantly increase a coin's value, so keep an eye out for unusual features or irregularities. For example, the 1943-D/D repunched mintmark steel penny can be worth more than $ ...

These are fakes, and the plating often appears uneven or can wear off in places, exposing the steel underneath. If you have a non-magnetic 1943 penny that looks copper, it could be a rare and valu ...