Take them out of the 2x2's and dust them off. It's difficult to tell what's going on.
1917D - EF, your reverse picture shows a much darker patina than the obverse. I don't see any signs of corrosion.
1917D (2) -EF details, cleaned
1916 - Looks to be a mint state coin. I can see some luster in the reverse. Possible old, light cleaning....pictures..
1917D - EF, your reverse picture shows a much darker patina than the obverse. I don't see any signs of corrosion.
1917D (2) -EF details, cleaned
1916 - Looks to be a mint state coin. I can see some luster in the reverse. Possible old, light cleaning....pictures..




















