At the Philadelphia Mint.
Coins made at the Philadelphia mint did not have mint marks until the 1980s. Your coin was made at the Philadelphia mint.
Their are a few answers. For pennies no mint mark means Philadelphia or for proof pennies which are only in proof sets S means San Francisco.
Pennies are minted at three locations in the US; The San Francisco Mint, The Denver Mint and the Philadelphia Mint. Pennies from San Francisco have an "S" on them. Pennies from Denver have a "D" on them and pennies from Philadelphia have no letter.
Only the Philadelphia mint made pennies in 1900. There isn't really a rarest.
Yes, but not just wheat penny's, every US coin made (except modern bullion coins) that does not have a mintmark was struck in Philadelphia.
Philadelphia Denver San Francisco
U.S. coins dated before 1980 (and all pennies) that do not have a mint mark, were made in Philadelphia.
The 1898 US penny was made only at the Philadelphia mint which means it will have no mintmark. These coins are also referred to as Indian head pennies.
In 1919 US pennies were struck at the Philadelphia, San Francisco, and Denver mints. To find out where yours was made look below the date for a small letter. If there is not it was made at Philadelphia. If there is an S there is was made at San Francisco. If there is a D there it was made at the Denver mint.
3.7 billion in Philadelphia, 3.5 billion in Denver, 319.9 million in San Francisco.
Philadelphia: 5,237,600,000 Denver: 6,360,065,000 San Francisco (proof coins only): 2,543,401
Mintage for the 1917 Lincoln cent are: Philadelphia 196,429,785 Denver 55,120,00 San Francisco 32,620,000