Just Sharing,2 1968 D Reverse Die Clashes.

That shows how much the die rotated since the last clash. As mentioned on another thread about slight die rotation, who can tell which die rotated? By the lines of the outlines we can tell which one moved. This show two lines on the reverse one. Other ones shows the bars at a different angle. But I feel both can rotate a bit and throw us all off a bit. 5 degrees on one side, then 5 degrees on the other. then we figure out the distance rotate, and add them together and think it is off by 10 degrees. Thus the 5+5 could of been an issue. So I don't pay a lot of attention until they get 45+ degrees off. Then we know it was not installed in the machine correctly.
Here is a full double clash on the reverse: