Allender,
Ok, let me clear this up.
Thanks!! I was quite confused by the way the descriptions have been going. I see now that your "technically there are only 50 sets" applied to six, so there are three sets, each numbered to 50, for 150 "pairs".
I don't mind appearing confused when I am indeed.

I put in the words about "all clear" because some people, including those in other forums, have commented on the tints that have shown up in auction photos. Those are all artifacts of the lighting. Though I have to admit that my own case-topper from OOPU seemed to be completely clear until I looked at it directly edge-on and could only then assign a tint.