Optional:-) I tried it amazing thing was 30-40% of the listings were for Jabo. So this means the seller has to intentionally flood the pre 1970 with new marbles, no accidental listing in wrong category here. if I were looking for Jabo why would I look in pre 1970. Not changing the subject but Ebay has made searching for vintage,antique collectable marble a joke and it used to be easier to ignore the flooding of the jabos when you had hopes of finding marbles also listed that were at least appropriate to the category. No beefs with jabo collectors just the sellers,and EBAY.