The reasons can be varied and can be multiple and include: color, engraving gone wrong, labeling done wrong, surface skuffs/dings, pin distances less then 1" from Pin to CG and pin distance greater then 5.5" from Pin to CG.
New NIB Hammer Hazmat Bowling Ball | 1st Quality (13lb/14lb/15lb/16lb)
[D056] New NIB Storm DNA Bowling Ball | 1st Quality 14lb
[087O] New NIB Track Criterion Bowling Ball | 1st Quality 14lb
[041N] New NIB Track Stealth Bowling Ball | 1st Quality 14lb
[C069] New NIB Storm DNA Bowling Ball | 1st Quality 14lb