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Key Date & Semi-Key Date

Coins By Series

If you're collecting the entire run of any individual coin coin type, please review the information below. You'll find front and back images as well as the key dates for each run. The key dates are those with the highest value in the run.

Indian Cents

Indian Cents

Mint Dates: 1859 - 1909

Key Dates: 1857 - 1858 - 1866 - 1867 - 1868 – 1869 - 1870 - 1871 - 1872 - 1873 - 1874 - 1875 - 1876 - 1877- 1908 S - 1909 S

Lincoln Cents

Lincoln Cents

Mint Dates:
Wheat Penny Design: 1909 - 1958
Lincoln Memorial Design 1959 - 2008
Lincoln Bicentennial Designs 2009
Shield Design: 2010 -


Key Dates: 1909 S VDB - 1909 S - 1914 D - 1922 NO D - 1931 S - 1955 DD - 1972 DD - 1983 DD - 1984 DD

Two Cent Pieces

Two Cent Pieces

Mint Dates: 1864 - 1873

Key Dates: 1872, 1873

Three Cent Pieces (Nickle)

Three Cent Pieces (Nickle)

Mint Dates: 1865 - 1889

Key Dates: 1879, 1880,1882, 1883, 1884,1885, 1886, 1887, 1888, 1889

Liberty Nickels

Liberty Nickels

Mint Dates: 1883 - 1912

Key Dates: 1885 - 1886 - 1912 S

Buffalo Nickels

Buffalo Nickels

Mint Dates: 1913 - 1938

Key Dates: 1913 S - 1914 D - 1914 S - 1915 D – 1915 S - 1921 S - 1926 S - 1937 D 3 LEGS

Barber Dimes

Barber Dimes

Mint Dates: 1892 - 1916

Key Dates: 1892 S - 1894 O - 1895 - 1895 O - 1896 O - 1896 S - 1901 S - 1903 S - 1904 S

Mercury Dimes

Mercury Dimes

Mint Dates: 1916 - 1945

Key Dates: 1916 D - 1921 - 1921 D - 1942/1 - 1942/1-D

Barber Quarters

Barber Quarters

Mint Dates: 1892 - 1916

Key Dates: 1896 S - 1901 S - 1913 S

Standing Liberty Quarters

Standing Liberty Quarters

Mint Dates: 1916 - 1930

Key Dates: 1917 - 1917 D - 1917 S -1918 D - 1918 S - 1919 D - 1919 D - 1921 - 1923 S - 1924 D - 1927 S

Washington Quarters

Washington Quarters

Mint Dates: 1932 - Present
Note: 1932 - 1964 coins were 90% Silver


Key Dates: 1932 S - 1932 D

Barber Halves

Barber Halves

Mint Dates: 1892 - 1915

Key Dates: 1892 O - 1892 S - 1983 S - 1897 O - 1987 S - 1914 - 1915

Walking Liberty Half Dollars

Walking Liberty Half Dollars

Mint Dates: 1859 - 1909

Key Dates: 1916 S - 1921 - 1921 D - 1938 D

Morgan Dollars

Morgan Dollars

Mint Dates: 1859 - 1909

Key Dates: 1893 - 1893 O - 1893 S - 1894 - 1894 S - 1895 O - 1895 S - 1903 O - 1878 CC - 1879 CC - 1880 CC 1881 CC - 1882 CC - 1883 CC - 1884 CC - 1885 CC - 1889 CC - 1890 CC - 1897 CC - 1892 CC - 1893 CC

Peace Dollars

Peace Dollars

Mint Dates: 1921 - 1935

Key Dates: 1921 - 1928

Jefferson Nickel

Jefferson Nickel

Mint Dates: 1934 - Present

Key Dates: 1939-D - 1943-P - 1949-D - 1950-D - 1954 S

The above list of key date and semi-key date coins is intended only as a guide for each series of coins listed. Many coins can be very collectible in better condition buy have little value in average circulated condition.

Please note that as with most collectibles, the condition of an item can have a much greater impact on its value than its age alone. The value of coins can be greatly decreased if they have been cleaned, therefore we do not advise people to clean their coins.