When I saw the OP w/the 1969 Ryan first thought I had was "4". I got slammed with a 4 on a 69 Jackson with similar nice presentation. The graders there are really bitchy about 1969 corners, I guess:
I'd leave the 68 and 70 in the holders; those grades are fair. The 69 presents nicer, perhaps a 5 or 5.5, but it isn't a six and I don't think going for a resub would get you more than half a grade.