Any silver coins dated before 1964 have 90% silver in them, so those are worth keeping and evaluating. Anything after 1964 had NO (or only 40%)silver content.
$17 to $20 each... Standing Liberty Half Dollars ranging from early 1930's-1945, made of 90% silver
$13 to $15 each...Ben Franklin Half Dollars from the 1950's and 1960's, made of 40% silver
$13 each...JFK Half Dollars made 1964 to 1970 made of 40% silver
3.00 to 3.10...Mercury head dime from 1944, 90% silver
1.00 to 1.50 each...2 Buffalo Head Nickels from 1937, highest value is for one that would have 3legs on the back of the buffalo ($500)
.15 to .18 each...Pennies 1941, some marked with D(Denver mint) and S (San Francisco mint)
Some sites that I recommend for selling are Varagesale.com, Ioffer.com, OfferUp.com, Ebay and letgo.com.
You can also go to invaluable.com or liveauctioneers.com and search their directory for an auction house near you and consign to them.
To finish, I will need you to click the five stars at the top right of your screen and hit the green submit button, thanks!