The trouble with Champion bags is that both Champion bought in and repackaged other companies marbles as well as later sellers - there's no real way of telling them apart. The only marble in this bag that I'm really positive is Champion made is the one swirl. I picked up a couple of bags from a dealer who claims they came from the Champion warehouse (the other bag is a mixture of clearies, game marbles, swirls and Bogard cats). I've no way of verifying they were packaged by Champion or not, but there's no modern Jabo's or anything that is obviously out of place.