[con40]

Overall, these are fair grades.

The '68 has a crimp or dent along the top edge (visible on the back of the card) and a fully dinged corner with a fold... 5 all day long.

The '70 has centering issues, a crimp or dent on the left side of the card, and some corner touches... fair at a 6, could have been a 6.5.

Not sure why the '69 is a 4. There must be a tiny bit of paper loss on it somewhere that isn't showing in your scans. That's generally too harsh a grade for a surface wrinkle.