You're describing a 1923 US Peace dollar, called that because it was struck to commemorate the end of WWI. There's more information at the question "What is the value of a 1923 US silver dollar?"
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The 1922 is probably a peace dollar. It would have the word peace on the side with the eagle. The 1921 is probably a Morgan dollar. It has a Liberty head on one side and an eagle on the other. These are worth about $25-35 on average.
Is it a Morgan or Peace dollar? A Morgan dollar features a personification of Liberty with a crown saying "LIBERTY" on it. A Peace dollar has a personification of Liberty with rays of light coming out of her head. The reverse of a Morgan dollar has an Eagle with arrows and an olive branch and a wreath under it. The reverse of a Peace dollar features a perched eagle sitting on a rock inscribed "PEACE". Without knowing the type of coin, it is impossible to state a value.
All Peace dollars have the same design. The difference between the 1921 Peace Dollar and the 1921 Morgan dollar is that Liberty looks completely different. In the more common 1921 Morgan dollar, Liberty wears a crown with the word "LIBERTY" on it, on the reverse of the Morgan dollar, there is an eagle with olive branches and arrows in its talons along with a wreath under it. On the Peace Dollar, Liberty looks like she has rays coming out of her head and on the reverse there is an Eagle sitting on a rock inscribed "PEACE", there is no wreath on the reverse.
It's a PEACE dollar rather than a "peach" dollar, and should have the word PEACE on the back under the eagle. If it doesn't have the word and the eagle's wings are outstretched, you don't have a Peace dollar, you have the more common Morgan design. Please see the Related Questions for more information.
Assuming the coin is circulated and has no mintmark ,your 1926 PEACE DOLLAR is common. Value is $17.00-$29.00 NOTE: No US coin is a Lady Liberty coin.