$27.
It's not a silver eagle. Silver eagles are modern bullion coins sold to collectors. The dollar denomination is entirely artificial. A 1922 dollar coin is called a Peace dollar and was minted for use in daily commerce. At that time the price of silver was controlled and the coin contained a dollar's worth of silver.
1922 is the most common date for Peace dollars so the value is mainly for the silver content. At present it's worth about $21. The 1923 is nearly as common, maybe worth a dollar more.
1922 is an extremely common date for silver dollars, so the value is primarily for the silver content. At present (31 August 2012), it's worth just over $24.
8-22-11>> The coin is a Peace dollar not a Mercury head dollar and retail values for circulated coins are $37.00-$40.00. 1922 is the most common year for Peace dollars.
$27.
1922 silver dollar with closed eagle wings
about $25
1922 is the most common date for Peace dollars, currently worth about $25 for the silver.
About $27.
There are no 1918 silver dollars Please see the Related Question for information about 1922 dollars.
A high relief 1922 Peace dollar is rare, they have values of $80,000.00 or more.
You have one?! Approximately 6,000 usd
$12.00 to $20.00 in circulated condition.
A 1922 dollar with the word "Peace" on the back would be a Peace dollar rather than a Morgan dollar. "Morgan" refers to George T. Morgan, the artist who designed the silver dollars minted from 1878 to 1904 and in 1921. There's more information at the question "What is the value of a 1922 US silver dollar?"
Dollar coin is larger so has most silver. 1922 dollar Bullion value: 9.96 GBP Silver (.900) - 26.73 g - ø 38.1 mm 1952 half dollar Bullion value: 4.66 GBP Silver (.900) - 12.5 g - ø 30.6 mm
$17-$450 depending on Condition.