Most likely, if you found the (presidential or Sacajawea) coin in change, it is simply in mint state (or more likely about uncirculated). If your coin has an "S" mintmark, it is proof because I don't believe that the San Fransisco mint makes non-proof coinage. If your coin has a "P" or "D" mintmark it is not proof but simply just in mint state or about uncirculated.
If you have a silver eagle dollar (the coin is much larger than a presidential dollar) dated 2011, it is uncirculated because at the time of writing, proof 2011 silver eagles have not been released yet.
A proof grade can not be given to a uncirculated (Mint state) coin. The term Proof is actually refers to a method of manufacturing, not a grade. But proof coins are identified by the by a prefix of PF before the grade and mint state are MS
All Proof 1972-S Eisenhower dollars are 40% silver. Current average market values are $7.00.
A Kennedy Half Dollar that was minted in 2007 and carries a mint mark of "S," was produced in clad and silver. The clad in a proof state is worth: $4; in silver, the value is: $7.00.
If it's not proof or a very high mint state coin, it's face value
There aren't 112 proof state quarters. There are only 50 proof state quarters, (along with 6 in the DC/US territories). Unless you are meaning you had both the clad (copper-nickel, common) proofs and the silver proof sets. But just about every clad US proof state quarter is worth about $1 or so, silver proof quarters go for about $7-8 or about fifty cents or a dollar above melt value individually.
If it's not proof or a very high mint state coin, it's face value
The set has all 5 State quarters a Sacagawea dollar and the half, dime, nickel and penny.
If it's not proof or a very high mint state coin, it's face value
The dollor is worth a dollar, unless it's a high grade Mint State coin or Proof coin
The coin exists only in proof state. 60-70 are known to exist and value range from $22,000 to $175,000
The 1990 Eisenhower Commemorative Dollar was issued in proof and in mint state condition. The value of each of them ranges between $20 - $30.
Prestige proof sets include 90% silver versions of a dime, a half dollar, and the 5 state quarters issued that year. All carry an S mint mark, for San Francisco.