Your Susan B’s are most likely worth face value.
I seem to recall a layer of controversy when her coin was issued at end of Carter’s term. Oh yes. It was b/c Susan B’s One Dollar coin was near the same size as a Quarter, worth .25 cents. Some ‘Helen Reddy type’ women thought it was demeaning to have Susan B. issued only a ‘miniature dollar coin’ vs a big ol John Kennedy Silver Dollar coin.