1990 Penny Coin Value Errors List: How D, S and No Mint Mark Pennies Are Worth Thousands of Dollars

The 1990 penny coin value varies dramatically based on mint mark and type. Most 1990 pennies without mint marks are common Philadelphia business strikes worth only face value, or a few dollars in uncirculated condition. However, the rare 1990 “No S” proof penny is exceptionally valuable, worth thousands of dollars, with high-grade examples selling for over $6,000. This rare error coin originates from proof sets and features a distinctive mirror-like, highly polished finish. The 1990-D (Denver) and 1990-S (San Francisco) pennies follow similar valuation patterns—common circulated coins are worth face value, while proof versions and error coins command premium prices among collectors.

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    1. A 1990 no mint mark penny is only valuable if it is the rare “No S” proof cent with a value of thousands of dollars, as the vast majority of 1990 no mint mark pennies are common Philadelphia business strikes worth face value or only a few dollars in uncirculated condition. You must check your 1990 penny to see if it has the proof finish, which is found in a proof set, or if it is a common circulated coin.

    1. The value supply and demand very simple. Because there are collectors out there that want the highest. Possible grade for every coin that they collect. And that’s why this coin sold for over $500.

    1. To identify a rare 1990 “no S” penny, look for a proof coin with a mirror-like finish and a frosted appearance on the details, and confirm that the “S” mint mark is missing from its usual spot below the date. This is a proof error coin, so a standard circulation strike from the Philadelphia mint without a mint mark is a normal and common coin. The “no S” penny must be a proof coin to be valuable, typically found in a 1990 proof set.

    1. The 1992 Close AM and 1992-D Close AM (the “D” is for Denver) are some of the rarest and most valuable coins from the 1990s. According to the PCGS, the U.S. Mint adjusted the penny’s design slightly in ’92 to enable a higher-quality strike. They were supposed to be released in 1993, and most were — most, but not all.

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