Definitely not Pelt. The Jacksons don't normally have the hooks like I see here. The ribbon looks a bit like jackson otherwise but I think maybe this is an early Alley. Mainly by pattern but also by size.
I agree the marble on Ebay is a green fizz. They do have clear base with bubbles that glows, antifreeze green ribbons which may or may not have AV, and the white. The white does tend to move like a sheet in the base but can fan out on the surface. Here's mine.
Champ didn't have a machine to make shooters. They made nothing bigger than the new old fashioneds in the 3/4" range, and none even that big before or after that run. That info comes from Dave McCullough and 2 different factory workers.
SMM only had a 5/8" machine all along until just recently, I was just at his shop a few days ago and saw his first successful run of 3/4" marbles. They were made less than a month ago. Before that they were all done on a 5/8" machine and 9/16" is easily in the range of what would come off that machine.