Thanks Al, that's sort of what I thought too - kind of a stretch to call them Champion Jrs. when so many other types were found in the same bags, and I will be dropping the term for ID from here on out.
Do you know if that is true for each variant? I've only seen 9/16" like the ones I posted and I've only seen 5/8" like the ones you posted. I have not seen any at 11/16".
Thanks, Ron. There are two marbles there. Pretty sure I bought every one I had a chance at. The second one you posted is probably the nicest I have ever seen - four colors on a Ravenswood -wow!
The two I posted are both 9/16" - I'm betting yours are 5/8"?