>what are they worth?
>what would you be willing to pay?
>what web sites places would you suggest I visit to see the value and sell
Price, of course, depends on many factors. You haven't provided any
clues. So, I'll list the broadest range of estimates.
1923 $1 in VG (bad shape) maybe $25. In CU (like new), maybe $250.
1917 $2 in VG, maybe $35, CU, $250.
These are just guesstimates, a dealer would offer you less.
There are several good web sites that you can look up in