Are they still in their original cellophane wrapper, inside an envelope?
If so, I wouldn't use them for scrap regardless, the trends value of a complete set is 25 bucks a piece.
I love the 65 silver dollar, there are 5 or 6 different varities, and as far as the 66, there is a large and small bead variety in which the small bead is worth 2500 smackers. Standard price for the silver dollars alone is 15 to 20 bucks a peice providing they are MS or AU.
Sorry dont know enough about silver content to help calculate a melt value.
Seems a shame tho