1983 Penny Phantom Letters?

When you see gray, throw it away and know it is just time until these coins will be come copper colored discarded Hershey's Kiss wrappers.

Always show us the entire coin, both sides. Thanks.

What you are hoping for is a dropped letter error but this is not one of those. The Dropped Letter is a relatively scarce error with its origins in the common Filled Die or Grease Filled Die errors but they are becoming more common actually the past decade. When debris, (often referred to by error collectors as "grease"), clog a die, it may after a few strikes, become compressed within cavities of the die such as numerals, letters or even areas of design. Even after the offending material has been dispersed from the field of the die through the striking of coins, it may remain intact within these recesses. Later the offending material falls out intact, like Jello from a mold, and becomes struck by the obverse die into the next coin. The result can be a perfectly shaped incuse letter struck into the coin with a bit of the offending material still retained like this one in this link. These type of errors are always sought after even as they are found more commonly than the past. https://coins.ha.com/itm/errors/200...0151-91499.s
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Normal zinc rot. Pareidolia.
https://www.coin-community.com/dict...reidolia.asp