18 Ben Franklin Half Dollars, all from 1950 to 1963. Together these add up to 6.52 Troy Ounces (Actual Silver Weight), which at the December 3 spot value of $59/ounce equals about $384 worth of silver. Yours for only $370, about 4% under spot value.
While I am not a professional coin grader, I would guess that these would be graded from Very Good to Almost Uncirculated. They are from 62 to 75 years old. They would make a nice holiday gift for a coin collector or silver stacker.