Well Tim, I can't tell if the '71-S is the re-engraved bow tie or not, from the pics. If it is, the rarity & value would depend on the reverse design. The re-engraved steps is rarest. As for the '89, if it does have the reverse of the '88, to the best of my knowledge, it would be unique. None have been found that I know of. I do know that there are some '89 dies that look like '88 due to die polishing. That would be my guess.
I hope u guys can see this well. View attachment 308755 I hope this is a better pic. I saw the one that was abraded. This one is I got for change somewhere. And I always pick up pennies on the ground, before I started collecting them.