Good Job @Ric getting this sheen on an image ID--- an almost impossible thing to do ( I ahve tried many times to no avail).
I often wondered about some of the later "Vintage" marbles such as Champion, Vitro, MK and of course Jabo that had this sheen to them.
Vacor does their own thing.
I wonder if it may have come from cullet of some sort.
I know, it was supposed to be a spray on the marbles while on the rollers, that created this sheen but so many later versions had this sheen--it just makes me think--what if?
@Alan usually has an answer--let’s call him up
Marble--On!!