
Value for "junk" silver can be determined by some simple math from one of the major wholesalers buy list:
90% SILVER DIMES & QUARTERS PAY SPOT + 3.50 X .715 X FACE
90% SILVER HALVES PAY SPOT + 6.00 X .715 X FACE
Expect your local coin shop to pay less and your local We Buy Gold place to pay you even less than that.
Good luck!