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That is the Mintmark.It is the S Mintmark.
First, no US coin of any type is referred to as a "Lady Liberty coin", but the symbolic portrait of Lady Liberty is on most older US coins such as the Morgan Dollar series. So the Morgan and the lady liberty are the same coin.
A 1921 Morgan Dollar has Lady Liberty on the obverse and an eagle with arrows in I'ts feet, on the reverse $30...A 1921 Peace Dollar has Lady Liberty on the obverse and a perched eagle with sun rays on the reverse..$100
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In 1921 two different silver dollars were made, both dated 1921. The first one made is a Morgan dollar, on the front of the coin above Lady Liberty's head is the motto E PLURIBUS UNUM. The second one is a Peace dollar it has the word Liberty above Lady Liberty's head and the values are very different. Post new question with new information.
Sorry no US Lady Liberty dollars dated 1820
Eisenhower dollar coins were struck in 1972, but no "Lady Liberty", matter of fact, no US coin is called a "Lady Liberty"
Assuming the coin is circulated,your 1921-S MORGAN DOLLAR is common. Retail value is $37.00-$44.00. NOTE: No US coin is called a Lady Liberty coin.
The face of Lady Liberty is on the 1882 silver dollar.
All Walking Liberty half dollars (1916-1947) have the same silver content of .36169oz of pure silver.
None were made.
If you mean a American Silver Eagle bullion coin dated 2005? Yes, there is.