The light print on the back of the 1999 Lincoln Memorial Penny could be indicative of a variety of minting errors. These errors can include weak strikes, die deterioration, or improper alignment during the minting process. In this case, the specific issue affecting the bottom of the letters in “States of” may be attributed to a weak strike or die deterioration, where the coin’s design elements were not fully impressed onto the planchet.

It also has a Narrow AM in the word America 

Numismatic Value

Coins with minting errors are often sought after by collectors due to their rarity and uniqueness. The presence of light print on the back of the 1999 Lincoln Memorial Penny could potentially enhance its numismatic value, especially for collectors interested in error coins. The extent of the error and its visual impact will ultimately determine its desirability among collectors.

Collectibility and Rarity

Error coins, including those with light print or weak strikes, are highly collectible within the numismatic community. The unique nature of such errors adds to their appeal, making them sought after by both novice and experienced collectors. As such, the 1999 Lincoln Memorial Penny with light print on the back, particularly affecting the letters in “States of,” may hold significant collectible value for those interested in error coins.