- Die cracks: These are lines that appear on the coin's surface due to a crack in the die used to strike the coin. Die cracks can be found in various locations and sizes, and their value can range from a few dollars to several hundred dollars.
- Off-center strikes: These occur when the coin is not properly centered on the die when struck, resulting in part of the design being missing or incomplete. Off-center strikes can be valuable, especially if the error is significant, and can range in value from a few dollars to several hundred dollars.
- Double strikes: These occur when a coin is struck twice by the die, creating a faint or partial second impression. Double strikes can be valuable, especially if the error is clear and well-defined, and can range in value from a few dollars to several thousand dollars.
- Mule errors: These occur when two different dies are used to strike the same coin, resulting in a combination of features from different coins. Mule errors are rare and can be quite valuable, often fetching prices in the tens of thousands of dollars or more.
- Overdates: These occur when a new date is stamped over the original date on the die. Overdates can be valuable, especially if the error is easily visible, and can range in value from a few dollars to several hundred dollars.
It's important to note that the value of any coin with an error can be highly subjective and dependent on the opinions and preferences of collectors. To accurately determine the value of a specific 1828 penny with an error, it is recommended to seek advice from a professional numismatist or by comparing it to recent auction results for similar coins.