The mintmark will be either a D (for Denver) or an S (for San Francisco) on the reverse of the coin under the "O" in ONE. Keep in mind that your coin could have no mintmark, in which case it would be minted in Philadelphia.
1922 would make it a "Peace" silver dollar. Many images can easily be found through an internet search.
On the back, look to the left of the eagles wing.
Sorry no such coin, look at the coin again
The 1922 silver dollar coin known as the Peace Dollar features the image of Liberty on the front and an eagle on the reverse, not Apollo. A 1922 Peace Dollar in average circulated condition can be worth around its silver melt value, which fluctuates with silver prices. In mint condition or rare varieties, it can be worth significantly more to collectors.
If by "misprint" you're referring to the word TRVST, where the U looks like a V, it's supposed to look like that. 1922 is by far the most common date for Peace silver dollars, currently worth $18 for the silver (as of 22 April 2013).
The 1922 date makes this coin a Peace dollar. Miss Liberty appears on the obverse of all coins of this series. Extreme wear is likely to make it look like a bald headed man. Value is just for the silver, about $15.00 as of today. A silver dollar with a bald man would imply an Eisenhower dollar, but those were all minted in the 1970s.
An 1847 seated silver dollar = =
If by misspelled you mean that the U looks like a V, then it's supposed to look like that. It's a really common date for silver dollars, currently worth about $21 for the silver.
Like an eagle
See the link below for a picture.
1879 would make it a "Morgan" dollar.
That depends on what silver dollar you're talking about. See the related links below for pictures of different US silver dollars.