Coins without a mint mark are not necessarily rare or valuable. In fact, the absence of a mint mark, especially on older US coins, usually indicates that the coin was minted in Philadelphia. The Philadelphia Mint, being the first and oldest US Mint, did not historically use a mint mark, and this tradition continued until relatively recently.
However, some specific examples of coins without a mint mark are considered rare and can be valuable, including:
All 1922 Lincoln pennies were supposed to have a D mint mark from Denver, but a small number were produced without it due to quality control issues, making them valuable.
This is a rare and valuable coin as it was one of the first proof coins accidentally minted without the S mark from San Francisco. Only a few dozen are known to exist.
This rare nickel was also struck in San Francisco but lacks the “S” mint mark. It’s the only Jefferson Nickel without a mint mark, with about 200 known copies.
Only two of these dimes are known to exist. One was sold at auction for $300,000.
Experts estimate around 3,000 of these dimes exist, making it the last Roosevelt series coin struck without a mint mark.
While most coins without a mint mark are not rare, certain specific instances where a coin was accidentally produced without a expected mint mark can make them valuable. Researching the specific coin and consulting with an expert is recommended to confirm its authenticity and value.
What dollar coin has no mint mark?
After 8 years of the Sacagawea Dollars, the United States Mint began to try new designs. Thus, came the Native American Dollar Coins. One thing that you can note about the new designs is that there is no longer a date or a mint mark visible on the dollar.
Where were coins with no mint mark minted?
From my experience, Until 1980, coins minted at Philadelphia bore no mint mark, with the exceptions of the Susan B. Anthony dollar and the wartime Jefferson nickel. In 1980, the P mint mark was added to all U.S. coinage except the cent. Until 1968, the Philadelphia Mint was responsible for nearly all official proof coinage.
What year did US coins not have mint marks?
Thanks for asking. Minting Without Mint Marks ( 1965–1967 )
From 1965 through 1967, no circulating U.S. coins had mint marks, regardless of where they were struck. This made it impossible to distinguish coins from Philadelphia, Denver, or San Francisco and was intended to eliminate collector-based hoarding.