This looks like the 1968 D rpm 001 on variety vista but more visible. I hope I’m not wrong lol sorry for the bad photo but at the bottom and top you can see it.
That photo shows an S; there are 2 known varieties of 1968-S/S according to Variety Vista, neither of which looks to be one of yours. All I can say is keep searching. Minor varieties like these can be easy to find.