Mint marks are letters that identify where a coin was made. The letter can      appear anywhere in the design but usually is placed near the date or in an area near the edge of the coin. The Mint mark is an important factor in determining the value of a coin.

• Half cents-- All coined at Philedelphia, No Mint mark.


• Large cents-- All coined at Philedelphia, No Mint mark.


• Flying Eagle cents- All coined at Philedelphia, No Mint mark.


• Indian cents-- 1908 and 1909, under the wreath on reverse side.


• Lincoln cents-- Under the date.


• Two cents, Three cents (copper-nickel)-- All coined at Philedelphia, No Mint mark


• Three cents (silver)-- All coined at Philedelphia, except 1851 New Orleans Mint- reverse side, at right.


• Shield 5-cent peices-- All coined at Philedelphia, No Mint mark.


• Liberty 5-cent pieces- All coined at Philedelphia, except 1912-S and -D-- reverse side to left of word CENTS.


• Indian 5-cent pieces-- Reverse side under words FIVE CENTS.


• Jefferson 5-cent pieces until 1964-- Reverse side at right of the building.


• Jefferson 5-cent pieces(1942-1945, silver)-- Above dome on the reverse side.


• Jefferson 5-cent pieces from 1968 to present-- Front under Jefferson's bust.


• Half dimes-- Reverse side either within or below the wreath.


• Dimes--Old types, reverse side below or within wreath; Winged Liberty Head type (1916-1945) on reverse side to left of base of fasces; Roosevelt type to 1964, left of bottom of torch on reverse; Roosevelt type from 1968 to present, front above date.


• Twenty cents-- Reverse side under the eagle.


• Quarter dollars-- Old types, on reverse side under eagle; Standing Liberty type, on front to left of date; Washington type to 1964, on reverse under wreath; Washington type from1968 to present, on front to right of Washington's queue.


• Half dollars-- 1838 and 1839 "O" Mint mark above date; other dates to 1915, on reverse undrer eagle; 1916 on front under motto, 1917 on front below motto and on reverse. After 1917 on lower left reverse. Franklin type, above bell beam; Kennedy type in 1964, near claw and laurel at left on reverse; Kennedy type from 1968 to present, on reverse under Kennedy portrait.


• Dollars-- Old types, on reverse under eagle; Peace type, reverse at lower tip of  eagle's wing; Eisenhower, on front above date. Anthony, on front left of bust.


• Trade dollars-- On reverse under eagle.


• Gold dollars-- On reverse under wreath.


• Quarter eagles-- 1838 and 1839, over the dates ; other dates prior to1907, on reverse under the eagle; Indian type (1908-1929), on reverse lower left.


• Three dollar pieces-- Reverse under the wreath.


• Half eagles-- Same as quarter eagles.


• Eagles-- Reverse under eagle; after 1907 at left of value, either above or below olive branch.


• Double eagles--Old types on reverse under eagle; Saint-Gaudens (after 1907) above the date.


• American eagles--gold bullion coin, Proof version only, on obverse between second and third rays at right, below date. Silver bullion coin, Proof version only, on reverse to left of eagle's tail. Platinum bullion coin, Proof version only, left, between rays.