DOLLAR, just like it's spelled on coins and bills - not "Dolar"
Not 1957 - The U.S. didn't mint any dollar coins between 1936 and 1970 inclusive.
Please post a new question with more-specific details.
There was no silver dollar in the US made in 1957. It might be a half dollar. These are usually worth about $10-15.
It's worth about $12.00 just for the silver.
1957 $1 bills are silver certificates. In the old days, you could trade that dollar for $1 worth of silver, or silver dollars. Right now, you can sell them or keep it.
I wood like to no what there worth, I have two 1957
There's no such thing as a U.S. silver dollar coin from 1957.
The 1957 Franklin half dollar is a very common high mintage coin of the series, most are valued for the silver at about $15.00.
1957 is an extremely common series, currently worth $1.50 or so.
1957 is by far the most common series for $1 silver certificates. In average circulated condition, one is worth around $2. In better condition, it's worth a little more.
There's no such thing as a "blue silver dollar". You're referring to a blue-seal silver certificate; these are only worth about $1.50 in average conditions despite their age and now-unusual design.
The last silver certificates were printed with the date 1957. All green-seal dollar bills are worth face value only, unless they're uncirculated.
Minimum...$1.00
It is worth about $1.25 to $1.50.